SixSpeed,

Great points!!! Thanks for your thoughts. I would really love to lift my speakers slightly however you can see from the pics that I have a challenge with the ceiling walls pitching in.

I need to bring in the rear side speakers to compensate for the height of the rear riser. I have this set at 14" at the moment... This may be too high. I'm having this all dialed in at the moment along with seating position front to back in the room so that I avoid sitting in a bass null.

Dedicated theater room: 30'x15'x9
11-4-4 Atmos System. Trinnov Altitude16, 271, DSP750 LCR, DSP7200.2, sides, 7200SE Rear, 5200.2 front sides, 4 x 320.2 atmosphere, 4 x 24" GSG Subs, 2 x Stereo Integrity 12000 (6000w per sub each with own 30amp circuit)
JVC NZ900+DCR Lens Projector, Kaleidescape system.