I went with
Elemental Shaman - totem of wrath, ressurection, totems, quick damage, ankh, easy macroability
Mage - scorch/winters chill debuff, water food, ports, easy macroability
Warlock - health stones, summoning, imp stamina buff, easy macroability (afflc), easy macroability
Warrior - I prefer this as a tank as far as potential for keeping and re attaining aggro, commanding shout
Holy Paladin - auras, buffs, greats one target healing, easy macroability, BoP, ressurection

My friend who is 5 boxing
Feral Druid
Shadow Priest
Resto Shaman
Balance Druid
Mage

We plan on running the 10 mans and we built our group around stacking buffs that compliment eachother without being redundant.