The answer is it is possible to have speakers that are too large for your room but that's not your problem.
Place them along the length of the room instead of the width. Place the back 2 feet away from the front wall, space them 9 feet apart and sit 8 feet away on the diagonal. Treat the first reflection points on the sidewalls and floor at least - ceiling if practical.
At one point I had the speakers positioned along the long wall. Since re-configuring, we have added furniture that might not work in that config, but I will definitely consider it.
May I ask what reasoning/experience leads you to this recommendation? Also, by "sit 8 feet away on the diagonal" do you mean "Sit at a position 8 feet away from the fronts of each speaker"?
Thanks
