Thanks Everyone for the help. I have been dreaming of this theater for years and now that I am finally doing it, I want it to be perfect!

From my listening position, the speakers tweets will be 18-24. I will have to scan in my crude drawing of my front stage and see what everyone thinks.

The front sound stage will be in a false wall I'm building. I was considering incorporating 500's below the screen. Will these bad boys cause my screen to vibrate? Also, will I need to put anything in the speaker cavities of the in cabinet 80's to help with vibration or can I set them directly into the 2x4 structure?