John,
Thanks. My back wall has a window and door at opposite ends so I can only get about 6' of separation for the surrounds at that height. Is that enough, or do I need to move them to the top of the wall (8' high) to get the 10' of separation?

I hadn't heard the bookshelf/center config before... definitely worth a look see.

Are the M60's too sensitive... meaning do they get "out of control" easily at higher volume levels?

Thanks again,
Walter