Grats! I also just recently bought my Furious Shoulders :-)

Negativ: I usually force the warrior in defensive mode with chain lightning, if he refuses, I kill him. If he goes defensive mode, I tend to go for the rogue, cause he does a huge difference. If that's not an option, go for a healer. But it's indeed a hard setup, everything with a lock burns hard when your groundings goes down and the grounding is always a risk factor! Remember to purge the warrior, that removes alot of hp.