Yeah, so you have an approximately "textbook" placement of your M22's, making a regular triangle. But considering the small size of your "triangle," the generous inter-tweeter distance -- which is 21", in fact longer than the distance to your M22's -- of the VP150 might adversely affect the sound imaging (although it will not dominate or anything as long as properly calibrated). If you can nicely place a vertical center speaker at all, going for an M2 or M22 as the center channel might be much better in this case.
