Since you have a priest I would only keep one shaman (priests have good AE healing) and replace it with a Mage. Mages have faceroll dps right now. LOL let me spam this one button and beat your shamans dps while watching TV. Two priests mean you should have incredible healing, but I wonder if it will cost you fights where you have to dps fast before an enrage timer. This is why keeping one shaman is important for the bloodlust (and totems).