If I played in something this limited again I would probably go strait wizard or cleric 12.
I'd prefer to fill the arcane caster role, as I play too many clerics as it is at the moment. But if someone has their heart set on it, I could play a meat shield type.
It shall be Greyhawk, and it shall be old school.
The actual setting won't matter much since you'll be spending the vast majority of your time in a big ole' dungeon figuring out puzzles, exploring dark depths, killing monsters and taking their stuff. But there are some tie-ins to the Greyhawk setting in the adventure. They'll be fun if you like Greyhawk.
Well, between the three of us (Rhun, Vertexx, me) we should be able to figure out who gets to play which archetype, although Vertexx will probably be sad to see that his powergaming might be nerfed a bit with the restrictions.