My room is 14x13. Receiver: Denon 2807

I'm very interested in the M22s

Would I be foolish to go with a smaller bookself for rear speakers? I wouldn't mind spending less money (I can afford the others, however) and I kind of like the idea of the rear speakers on stands instead of wall mounted (the wife might like this too--I'm still selling her on the idea).

Will the VP100 work well in this setting? I can't fit the VP150