Matthew, carefully studying your pictures, it appears that there'd be no problem with the left side-surround by mounting it about 5-6' up at the front edge of the outside door. The right side-surround could be placed either on top of the bookcase or on an upper shelf. It could be placed on any sort of support(our Canadian members strongly recommend hockey pucks for the best sound quality)to give the bottom driver of the QS at least 2" of space for the sound to radiate into the room.
I've used the M22s for eight years now for listening to almost entirely classical music, and can assure you that, especially when supported by a good sub, the musical reproduction is superb.
