How about keeping the VP150 and putting the M22's under the screen? Most A/V equipment will be hidden in a cabinet built into the right wall. But I want to keep the video games in a console front & center in the room, under the screen, so the game controllers can reach the four front seats. The VP150 would fit perfectly on top of it.

So, in my situation, you are saying that having the M22's at below-ideal height, tilted back, would be better than having the left speaker too close to the wall, giving it a different sound than the right speaker, correct? Remember, the left speaker will be relatively close to the wall, no matter what (8-10" max). If I move it any further, I'll lose the stereo separation for the left seat positions.