I completely agree with mayhem13, because I learned the hard way.
I took out a wall, then rebuilt it with my screen in the wall for a rear projector placement, then carefully measured space on each side of the screen for in-wall racks, drawers, etc. much like it looks like you've done. Everything was symmetrical and accessible.
About half-way through the construction I did a test run - and didn't like it. I had red lights, green lights, blue lights, and counters changing numbers from the equipment. As small as these lights and counters were, in a darkened room their presence was elevated. I continued with it for a couple weeks trying to make up my mind if I disliked it enough to do something different.
In the end, I decided to put the speakers behind wall openings alongside each side of the screen that were framed out with speaker grill fabric and I began the process of figuring out how to retro-build an in-wall rack at the rear of the room. It was a job, but I'm much happier. Now when the lights go down, my attention is directed to only one thing - the movie.
You may not have the option of moving the equipment to the rear of the room as I did, but that doesn't mean the problem of lights can't be solved in a different manner. Mayhem13's suggestion of solid doors and a repeater is a valid one.
The obvious sometimes escapes me. Don't let it escape you!