I am having a new house built and am taking the opportunity to rebuild my HT. My current HT setup is out-of-date and not worth mentioning here. I am going to purchase the Yamaha 2400 and use a 7.1 setup. I am wondering what would be the best speaker choice. The room is 15' wide x 19' long x 9' high. The setup will be for 90% HT. I was thinking about using 3 M22ti speakers for the fronts and center. But not sure about surrounds and rear surrounds. Would 4 QS4 speakers work? I will probably go with an HSU sub.