Thanks everybody for your input.
I am leaning towards the M22 as a center, but I do like the advice on using the M60. I will have to decide at a later date.
I will have to drop my PJ screen to about 30" from the floor, if I want to accomodate a M2 at the top (ceiling is 96", top of screen is 90", screen is 54" high, this leaves 36" to the floor) and an M2 at the bottom. I would assume that these speakers would have to angled up or down to project to the listening area. Not a lot of room to play with at the top for mounting the M2.
This may bring another adjustment into the picture. I want to shelf mount the PJ. It will be about 16 ft away from the screen at a height of about 7ft. With the people seated 12-13 ft away from the screen and the screen lowered to 30 inches from the floor, the people may be in the light thrown by the projector.
Of course like everyone, I am looking for the best results in music / video as possible within a budget. I am also looking to keep things as simple as I can. Every new idea seems to bring out other small adjustments to me made. This is why I have started early on the planning, planning, and more planning.
Thank you all,
Myles