It's not too bad; my Stamina set takes up 7-4-2-1 bag slots on the four girls. I figure it may come in useful in the future. As far as positioning, I ran around behind him (his aggro radius is small) and set everything up behind the door. That prevents his KB from doing much aside from damage, and lets me get a fair amount of DPS in before the first MC.

I hit heroism x4 before the pull, then avenging wrath at 20 seconds left on heroism, and all out until the first MC.