Matt - You are off to a good start. One thing though. The audio level on the YouTube video is a bit low. I have to put my volume slider to the max to hear it well.
You definitely have the right kind of diffusors behind the speakers. I would be interested in how these speakers work and what all those drivers are. Also, I would expect more rugs on a hard floor like that. It must be very live.
Steve N.
Empirical Audio