I leveled a priest and 4 hunters as my first team. The priest gives you amazing aoe heals which makes managing the pets a breeze.

All through the classic world and outlands I had very little trouble with dungeons. They were almost trivial with the 4 tanking pets and 4 ranged dps you just chew up stuff. Wotk is a whole different animal. I had trouble doing all of the dungeons at level or a few levels beyond them. I was unable to clear any of the dungeons when I was supposed too.

The saving grace of this setup is that it is hellish fun in AV

I'd suggest a Pally tank, a Shaman healer, and 3 BM hunters with dps pets. That setup gives you the mico-management free totems (clensing totem is awesome), some decent aoe heals at range, and a tank that can take a punch. The aoe tanking and aoe hunter abilities are real nice for synergy too.

Since the end game is all about heroics and emblems, don't do what I did and level 2 teams to 80 just to get into the heroic game.