Almost forgot. Entry to the storage area is a problem I haven't worked out yet. I've considered using french cleats and just lifting the screen off the wall when I need to get back there, and I've also considered a piano hinge or something to swing the screen up. I'm not a huge fan of either option as I'd like to DIY a masking system at some point.
I'm open to suggestions!
I was guessing about 24" behind the screen wall, so it sounds like I need to bump that up to 28"-30". I'd rather have a little extra than not enough!