Hey Fury,
I have been making some progress learning wow and enjoying 5mmb. I am leveling 5 at a time and have had success using your PowerLevel feature. I am looking for suggestions for my group as I move towards 20 mans.
Team 1: Protection warrior, holy priest, frost mage, elemental shaman, warlock.
Team 2: Protection warrior, holy priest, fire mage, elemental shaman, warlock
Team 3: Protection warrior, Resto druid, moonkin, hunter, hunter
Team 4: ??? More DPS?
As A-A-Ron said, focus on ranged. Melee is a luxury, and much harder to control. Holy priests will be your best healer, you should have a shammy in each group, Warriors are the very best tank. You can have a druid do double duty as a tank or healer. A druid tank is very helpful for ZG, but not needed nearly anywhere else, aside from dungeon running. Moonkins run out of mana fast, not very big damage dealers when you look at total damage. Hunters are amazing. Warlocks are amazing. Mages are necessary for frost dps and water.
I would reccommend that you level mages and warlocks cause they have tons of dps and im currently leveling on alliance a Fury Warr, Frost Mage, Aff Warlock, Shadow priest and a Holy pala.