If you don't want to go Blood, your best bet is probably stacking haste and Glyph of Dark Succor. Haste to poop out more death strikes when you can. Pet and Sac (Dark Pact) talent is helpful.... I don't know if Fallen Crusader stacks, but I imagine you'd still want to do this in UH presence for the haste.
It really isn't geared for this because you want to do two different things - you want to ass blast/aoe lots of mobs, and you want to survive.
You really should just bite the bullet and go Blood. The survivability will make up for the smaller numbers and it makes doing dailies SO much easier when you don't have to mount up, fly to a ledge, bandage and food, and then come back and find all your quest mobs dead.