The shelf runs the full length of the room. The room has two sides, one a mirror image of the area with my home theater gear in it.
The couch is a recliner couch, so its not flush against the wall, its probably a foot out. The ledge is probably 6-8 inches deep, so a surround back speaker would theoretically be placed no more than 20 inches from the back of the couch, or maybe 26 inches from my head. Too close for surround backs?
If I were to aim for a more traditional surround placement, rather than slightly behind and at 45 degree angles, I would almost certainly need stands it sounds like. I have two toddlers in my house, any suggestions on stands that are both extremely stable and physically attach to the speaker in some way?
Thanks for great suggestions so far!