I finally cleared it last night with 3 rogues, 1 warrior, 1 cleric. Started at lvl 18 and ended at lvl 20.

Here are the specs:
Cleric:
http://rift.zam.com/en/stc.html?t=00jra.x0xx0R.Vo

Warrior:
http://rift.zam.com/en/stc.html?t=0cEhm.xA00z.g0R

Rogues:
http://rift.zam.com/en/stc.html?t=0McTN.xIzmoo.V

I had a blast -- although that one quest killing the glowing rocks seriously hulked me... So MANY adds lol