I met with a home cinema installer for my new house (ready by December). The living room is 12'4" X 16'1".
He suggested using the top wall for home cinema (TV with drop down acoustically transparent projector screen and in-wall speakers from Monitor Audio Trimless 200 series).
Effectively, that gives an almost 16 feet viewing distance. I'm thinking of going for an 8 feet screen.
My original plan was using the other wall, with 12 feet viewing distance. So 7.1.2 speakers for Dolby Atmos would've been ideal. But with a 16 feet viewing distance, is 7.1.4 setup better?
The fronts and centre will be in-wall speakers and the rest will be in-ceiling. I'm also thinking of going for MA in-wall sub.
Going for 7.1.4 would also mean opting for Yamaha RX-A3040 instead of 2040.