The ceiling is about 8 feet from the floor. Is that good enough to have the speaker mounted on the ceiling? I prefer not to do it this way, but mounting them on ceiling would definitely solve my problem. I won't have to worry about the wall, and I can place my right speaker a little bit to the back without worrying about the door.

If the ceiling is high enough to mount the speaker, should I place them directly to the side of listening area or should I place them a little to the back (1-2 feet) ?

Thanks.