Currently set up for 5.1 with my rear speakers on the ceiling and slightly behind. However, I was wondering if a 7.1 setup would work if I moved the two rear speakers slightly closer together and put two additional speakers on the sides at ear level. The deal is the room setup vs. aesthetics. If I do that, my 'rear side speakers' would be placed weird. From the sitting position, the right speaker would be about 4' from my right ear and the left speaker would be on the opposite wall, way over about 11-12 feet or so to my left. Would that be really weird and a waste of money or will my Denon X4000 compensate? Or should I just leave it be and keep it 5.1?