I'm replacing a pair of MMGW's with QS8s. I purchased the wall brackets to go with them. The couch is placed along the rear wall, and my wife doesn't want it brought further into the room. The shape of the room eliminates sidewall placement. The only place to put them would be on the rear wall. I'm thinking that they may sound better spaced a little wider than the MMGW's. Does anyone have experience with a room layout like this?

Room Rear
Room Side

Room Front