If your goal is to 10box raid content (I can't see any other reason to 10box), I'd advise against any melee DPS at all. Ranged characters can still stand in melee range when necessary, but having all ranged gives you much more flexibility in terms of positioning and avoiding cleave deaths, etc.
If I were 10boxing, and looking for a fun comp, I'd seriously consider boomies/resto druids. You can wild charge to your 'shrooms.
On each druid, drop a 'shroom and set it to focus. Set up a hotkey to wild charge to focus (different hotkey one each druid) and the other druids to charge to that druid. I imagine having a raid-wide teleport to any of 10 locations with a 15 second cooldown would make positioning and avoiding damage nearly trivial.
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