Vic, as Randy(sirquack)pointed out, I said nothing about 2' from the walls. Since your room is only about 13' wide, you need to use all of that in spreading the surrounds, so they'd be just about up against the side walls. The 2' I mentioned was just a suggestion to have them about that much farther back than being directly alongside you. Since you've said that the couch won't be up against the back wall, you should be able to move the surrounds back about that much.

As Dean mentioned, it would be good to use three vertical M22s across the front.

-----------------------------------

Enjoy the music, not the equipment.