It sounds like you have a good handle on what to get. The only thing I'd personally spend more consideration on is the mains. Granted, I don't have any first-hand experience with any of the in-wall/on-wall speakers, so take my skepticism with a grain of salt. I think I'd personally like to have normal M22s out in the room where I can play around with placement, but I understand the appeal of wall-mounted speakers that don't waste floor space and may be more aesthetically pleasing. VP160, QS8s, and EP350 sound like a killer combo for the rest of the system.

Now I'll let the people with greater knowledge roll over me.