Yea, I can keep rejuv up and never run out of mana as long as Blessing of Wisdom is up. If I double stack the HOT's it I can only go about 4 min and im OOM.

4 healers isnt the problem though, Its getting the DPS out of them that im having a bit of trouble with. I can slow fight just about anything (just healing) but that takes forever. Im still spoiled by my Mage groups aoe damage and the videos of shamen and their chain lightning I guess. This morning I tried to slow fight the first boss in UK by only useing HOT's and DOT's instead of slinging wrath and starfires. End result was the fight took about a minute longer than normal and I was still OOM by the last 10k hp.