Belial's an awesome choice, though I'm a fan of the storm bolter and power sword combo. It's mostly because Dark Angel armies need everything they can get in the way of ranged firepower since a lot of their choices are pretty expensive. Since you're going to be piling into a Crusader though, the claws are good.HQ
Belial (LC) 130 pts
Interrogator-Chaplin (term. armor) 145 pts
As far as the Chaplain goes, I wouldn't bother spending points on Terminator armor. It actually makes him have less Attacks and he doesn't really need to fear normal wounds much, more ones that ignore armor (meaning the Terminator armor won't help him any).
Nice, though I'd swap out the guy with the fist and storm bolter for someone with a hammer and storm shield since the unit will be in combat most of the time. I don't think the standard is required though.Troops
Upgraded DW terminator squad 270 pts
(4 pair or LC, 1 powerfist/storm-bolter, apothecary, standard bearer)
:good:DW terminator squad 245 pts
(1 Assault Cannon, 4 storm bolter/5 fist)
I wouldn't bother with a flamer. They have no range and it doesn't appear that this unit has a transport, so the chances of getting into range to hit anyone are slim. A plasma gun would probably be a better choice for a unit that plans to hang back.Tactical Squad 270 pts
(1 flamer, 1 Lascannon)
Cool beans, though you're likely going to feel a distinct lack of anti-tank firepower in this list. You can bust transports, but anything AV13 or higher will be a bit of a challenge.Heavy Support
2 Predators w/Autocannon & HBs. 190 pts
No brainer!LRC 250 pts
Best of luck!