I also want to say, that horde is without question the superior faction for a 4x warrior group. Windfury totem is going to help with rage starvation in ways that alliance cannot hope to match. This was, in fact, my biggest issue with my warriors. I could have pushed through and continued to gear them out, and I might continue to gear them out at some point in the future, but, the monopolization of rage by one warrior, while the others starved resulted in very shoddy overall DPS. Windfury procs are going to go a LONG way towards helping with those other warriors generating the rage they need.

That isn't to say 4x warriors are not viable alliance side, it's just that, it's going to be an uphill battle, and everything you can do with warriors, you're going to be able to do easier with mages, or other ranged DPS. Of course, later on, as warriors start to scale out of control, this will probably change to where only mages are really comparable.

I'd say if you've got a warrior team, and a mage team, you're pretty much set.