My fronts will be 12 feet from my sitting area, the surrounds will be at about 95 to 100 degrees to my left and right. If I use rears, they would end up 14 feet behind my listening position. My room has 8 feet ceilings and is 15' 6" wide. Fronts will be M80's or 60's, surrounds will be QS 8's, and rears will be ?????