I think I would throw a Druid in there instead of a Wizard. They can port, buff heal an do have damage spells, SoW etc. That way when Druid gets high enough can port you guys all around. I would go SK, Monk, Druid. SK can tap heal, Monk can Mend, and Druid can keep up with the spot heals. Win win I think. Lots of DPS, and Druid brings a lot of good stuff to the table, Snare, Root, Damage Shield, etc. Druids are a hell of a lot better than people think in a group other than a Port Whore trust me. They pretty much fade out at say level 54 though.
[You must be logged in to view images. Log in or Register.] All 3 classes can pull which is a God Send. The Druid has Harmony, which outdoors is just a killer spell to have to pull with.
Shaman is a bit over rated, which I have a really high level one, with the thought of Haste and Slows. If you are the ONLY healer in a group trust me you do NOT have the mana to haste 2 or 3 Melees, Slow every mob that comes and buff people let alone other people coming up to you wanting SoW etc. Canni is only so good lol, unless you want to have a lot of downtime. Plus Canni dancing gets REALLY OLD after about a hour let alone hours. My Druid, Cleric is a breeze to play, no pun intended, compared to a Shaman to play. Then you are sending in your Dog etc., Rogue, Tank want Strength Buff, Dex Buff for procs etc, you get the picture, it is a FULL TIME job.