Wow gaz, I never knew you were that into it.
Ranger:
Just another point... If this is strictly a rehersal or recording setup, the acoustics of the room are critical. No two rooms are the same so it would be impossible to advise you, but when micking amps, using sound baffles can clean up the sound quite a bit. Also, if there are odd dimentions to the room, the dynamics can be significantly changed with strategicly placed baffles elsewhere in the room.