The W's are great, you will love them. I also agree the 7.1 is probably a waste, my room is much larger than that and 5.1 is plenty, and I am pretty picky. Maybe try it as it is and if you think 5.1 will be good, switch the QS4's for some QS8's within 30 days and save yourself from buying the 6 and 7 speakers? Of course if it sounds great with the QS4's you can just leave it too :).