I just did some measuring, and the edge of the door is 3 1/2" from the wall, so on-walls would really interfere with the door. The other thing is that there's no way that each speaker can be placed at equal distance to left/right on my listening position. This is frustrating because I need something to work. If I could please get some other suggestions, I would greatly appreciate it.

The only reasonable argument for owning a gun is to protect yourself from the police.