Goooooooooooooooooooooood Morning

Currently I don't want to play a 5 chars team.
I just want to relax and hang around in the good old world of warcraft.
I want to explore a new fraction ´(horde), see new quests, new game content, enjoy a "new" game, again.

So I'm planning to two-box..... ok.. I'm addicted... I just want to play

So ... bloodelves are so graceful.. so sweet... I'll take two of them. But which class?
I don't want a paladin, but I need a healer in my combo so class a) is a priest and class b?

Which is more effective in tanking an elite mob to complete a group quest (while my holy priest is spamming heals)?

- warlock pet
- hunter pet
- rogue (because of dodge rating + leather)

any helpful ideas?

thanks in advance.