If you can get more damage out of your gear, I'd highly recommend taking some points out of Eldritch and maxing Bind Demon and throwing a few into Demon Mastery (enough to get to 3 demons with soft points). I used demon GCs to get there (which is fine, since eldritch GCs are pointless on this build). With a strong enough demon, and each defiler linking damage between 5 targets, you can clear the screen surprisingly fast at high player counts.