I'm Currently rolling a 5-man ret team at level 65 now

I also have a level 80 warrior on account 1, and level 80 shammies on each one.

I plan on leveling 5 DK's just for the hell of it ocne im done with ret, so how should me team make up look like?

I was thinking DK, 3 Ret, and warrior? Maybe a shaman?