Here's the write-up for the 03:59 T0 run.
I started this run at the Battleship Missouri savegame of the T17 run after mission 2, because I wanted to use the Defender all the way to New Tokyo (Barracuda) without landing on Willard after mission 3 or hitting the Balboa wreck. So I bought the class 3 Lavablade turret and then I hit the DSE H-fuel depot near Baltimore Shipyard en route to Manhattan and California Minor as usual.
On California Minor I bought & equipped The Hammer (Adv. Stunpulse + Javelin + Slingshot) immediately because I wanted to minimize the time spent at equipment dealers for shuffling around equipment; in the T17 run I had used the more economical Bracket (Adv. Stunpulse + 2 x Javelin). Then I proceeded to New Tokyo (adding the Starkiller torpedo launcher while on the Hood) but I found that I had forgotten to plan the money for buying 39 units of Light Arms ... I was about $20k short. This was almost exactly the money I had spent on Starkiller launcher + torpedoes but going back and doing missions 6 + 7 without torpedoes was not an option, because that way I would have lost more time than I had gained by not going for the Balboa wreck in California.
So I went back to the California Minor savegame of mission 3 but this time I went straight for the Balboa when all hostiles were destroyed (shortly before 0:57:00). On the way to Manhattan I was lane-hacked twice but the New York jumpgate was completely clear, and so I counted my blessings and proceeded without flying the mission again, despite the loss of about one minute.
Mission 4 loadout: Adv. Stunpulse + Javelin + Slingshot + 2 x Lavablade Mk III + Lavablade Turret Mk II. After dispatching the initial wing of rogue Defenders I hammered Battleship Unity with my Lavablades, in order to speed things along. When I heard the 'code red' line I let off and amused myself by chasing Defenders until the tradelane was reactivated; at Benford I fried some more Defenders to while away the time. On the Magellan side I applied The Hammer to the Piranhas and cleared them away before the Lane Hackers even declared their intention to open fire.
On Mactan I bought two class 4 Hellflurries, since they match the Pyros turret from the Balboa wreck perfectly and I intended to do most damage via explosives (missiles, torpedoes) anyway. The Defender is not agile enough to handle the speed mismatch between the 500 m/s Lavablades and the 700 m/s turret + 750 m/s pulse gun in a furball; it has to shoot whenever it can and at higher angles only the fast guns or the slow ones will hit, but not both. After that I did not change the loadout of the Defender (The Hammer + Hellflurries + Pyros turret) until I sold it on Planet New Tokyo, except for adding the Starkiller torpedo launcher and replenishing missiles before mission 6. In order to conserve funds I used torpedoes only sparingly during the Bretonia phase, preferring the more economical Hammer (Javelin+Slingshot) in furballs. Basically, I used torpedoes only for sure kills on initial approach: 1 before the Glorious, 1 after, the 3 at the Leeds jumphole, 1 near Leeds, 2 at Stokes. But then my brother came and I had to demonstrate a couple of moves.
Still, I used only 13 torps total and this had a beneficial effect on the funds. In particular, I did not spend any torps on the two gunboats in Tau-31 because the powerplant of the Defender is so weak and I had kept the fighter combat loadout with the energy-inefficient Hellflurries. Destroying these gunboats before the deadline in order to gain time would have taken about $10k in explosives, and I was not prepared to spend that kind of money to gain a couple of seconds. With the Crusader + Dublin Dusters + Pyros Type 2s the story would have been quite different, of course ...
On Shinkaku in Tau-29 I rummaged through the accumulated loot in order to see if somebody had finally gotten around to drop a CD for me because I did not want to head into the battle without countermeasures; somebody had, so I mounted the thing and bought flares (otherwise I would have bought the cheapest CD available). Before the fleet battle I deactivated one of the Hellflurries - leaving the Pyros turret and one Hellflurry as active guns - and switched to cockpit view; when the battle commenced I headed straight into the Achilles Hole of Battleship Schiller and pounded it with the the active guns until it blew up. After that I switched back to chase cam view, reactivated the second Hellflurry and concentrated on taking out any fighters and gunboats that were left.
On Cali I sold all surplus equipment & ammo except for 4 Starkiller torpedoes that I intended to use during mission 8; as always since mission 1 I left the nanos/batts alone since they were about okay already (5 nanos, 6 batts); then I bought 3 Pyros Type 4s. On Planet New Tokyo I executed level-up trick 'Adv. T-Hawk Mk III' and it worked as advertised.
IOW, I sold 17 gold, bought 17 H-fuel, sold 13 diamonds, sold H-fuel. After that I was able to afford 45 units of Light Arms and so I was home-free since it was clear that I would be able to meet the 4-hour deadline unless I lost lots of time compared to the other runs. I did lose some time (2 minutes alone in mission 12) but as I was still on track I did not care ...
Here's the time table:
<pre><font size=1 face=Courier>T-HawkT0 ori.T6 curr.T0 ship worth cred. kills BS savepoint name
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0:18:30 0:19:03 0:16:55 Starflier 10,771 3,704 27 - M01: Criminal Base Destroyed
0:24:06 0:22:50 0:21:33 Patriot 16,294 8,617 27 - M02: Manhattan, New York
0:35:34 0:34:25 0:31:30 Patriot 17,929 8,617 37 - M02: Return Ashcroft
0:51:39 0:47:37 0:44:35 Defender 25,314 36 41 - M03: Cal. Minor, California
1:02:46 1:01:22 0:55:08 Defender 25,891 2,580 52 - M03: Respond to Station Willard
1:13:54 1:15:16 1:04:34 Defender 48,732 5,580 62 - M04: Manhattan, New York
1:37:28 1:41:08 1:26:49 Defender 60,506 18,275 93 - M05: Cambridge, Cambridge
2:04:00 2:09:03 1:51:16 Defender 94,756 21,502 107 - M06: Hood, Dublin
2:15:21 2:22:02 2:00:43 Defender 99,793 28,502 118 - M07: Leeds, Leeds
2:30:32 2:38:28 2:14:58 Defender 97,920 27,138 127 - M07: Engage the Rheinland Fleet
2:48:19 2:55:37 2:30:56 Barracuda 84,533 1,031 133 - M08: Shinagawa, New Tokyo
3:00:18 3:09:11 2:43:00 Barracuda 91,998 60 141 - M09: Kyoto, Chugoku
3:11:15 3:22:17 2:54:45 Barracuda 111,175 10,654 153 - M10: Kyoto Chugoku (sic)
3:21:58 3:33:15 3:03:47 Barracuda 184,324 69,696 159 - M10: After Meeting Von Claussen
3:30:08 3:43:05 3:12:14 Barracuda 207,388 95,806 167 - M11: Osiris, Texas
3:50:16 4:05:43 3:33:06 Anubis 176,372 81,819 192 - M12: Osiris, Omicron Beta
3:59:44 4:16:49 3:44:06 Anubis 154,562 87,874 205 - M13: Toledo, Omicron Alpha
4:14:14 4:32:53 3:58:30 Anubis 123,362 71,590 209 - (Manhattan, after mission 13) </font></pre>
Conclusion: the Defender is a bit slower than the Patriot during missions 3 and 4 but during the Bretonia phase it beats the light fighters because it can mount The Hammer (Adv.Stunpulse+Javelin+Slingshot) and a torpedo launcher in addition to a decent set of hull guns. The Crusader has a very strong powerplant and it can utilize the Pyros Type 2 guns from the Balboa wreck, but buying & equipping the Crusader would have taken at least one minute longer and the only place were it could have saved time is Tau-31 (the scene with the two lane-hacking gunboats). In Tau-29 the Crusader can take out Battleship Schiller clearly faster but the Defender is more manoeuvrable and so it has an advantage for taking out fighters quickly.