Between Blackstar and Void Judgement I can nuke pretty much any group.
Once you start slotting sets and getting regen and end bonuses, you don't really run out of endurance anymore. So the end costs of the nukes is manageable and I slot Blackstar with dmg and to hit debuff.
I also grabbed fly, and slotted it with the Freebird set for stealth.
Also consider grabbing Recall Friend for med-evac situations, I've found it very helpful to be able to fall back, grab the deadies and rez them outside of the AOE'ing mobs.