I'll probably go in this order:
- My Ferals.
- Pally or Priest (undecided), with 4x DK's.
- Pally, Warlock & 3x Shaman (or 5x Shaman, if Pally joins DK's)

Then not sure.
Tempted to mix my teams up a bit.
But will likely level at least four teams to 85th, fairly quickly.