Last night I broke the spawn with the following group, it was a very close fight cause someone wondered a bit and we got some adds.
43 cleric
40 chanter
38 ranger
45 ranger
We invised and ran up to the Queen (it was her ph but you get the point). then the rangers attacked it and the enchanter mezzed the others. I (the cleric) root parked a few and chain healed the chanter till he got them all under control. This method works pretty well if you keep away from the water so you dont get to many adds. The room is easy after you break it. We were there for 2 hours and no queen, but we did get some nice from the adviser.