Nice layout. Will be following your build for sure. It looks like we may have the same designer or one that's using a very similar design as mine. The clippings you posted of the design plus the equipment you're using are near identical to mine, as my room has very similar dimensions. It will be interesting to hear how well the atmos setup sounds with the upward firing at the ceiling speakers, given the divide on opinions on the matter. I was surprised to hear a professional expert give contrary advice on the setup from what the norm opinion seems to be on the "bouncy house" atmos speakers.