Best three man group? With some Criteria.

[Vexenu]

If you're going to go Monk, War, Shm why not just go Monk/Monk/Shm? The Warrior really adds nothing to the trio that the Monk couldn't do better. Warrior HP advantage isn't a factor with a Shaman healing. Mend, FD and superior Monk avoidance and DPS will be much more advantageous. FD alone will likely save your dad a lot of frustration.