I think my 1st group is only going to be 4 box and my GF healing on my 5th account. My 2nd group will be when she isn't playing, and it will be a 5 same class PEWPEWPEW group, boomkin it sounds like is the general opinion. Then I'll have a 3rd party to level up in instances with intent to grind heroics and do professions, etc. I don't know if I can pull off a mulit-class group, but maybe I'll get more comfortable with it in time.