re: In-Wall/In-Ceiling Speaker setup..need advice again.

I don't have a choice but to use in-wall/in-ceiling speakers or a soundbar. I'm not hiding the speakers, I'm hiding the receiver, cable box, apple tv box, etc. so that all you see is the tv mounted on the wall. The speakers will be visible except for the sub which will be placed either in a corner or behind the cinema seating.

I simply can't use free standing speakers with the room configuration. People would be toppling them over as they walk from the other upstairs rooms to downstairs.