On AT walls.
My original plan was to head in that direction but when I started thinking about the size of the room ... it was nixed. If I knew the on-walls were as good as they are I might have explored the combined HT/family room more.
If you do everything with bookshelves and towers your going to loose 2 to 4 feet on each wall, maybe more to do it right. Your 16x20 is now a 10x14.
I think you can get that down to 6 or 8” a wall using all on wall surrounds. I personally would do a combo ... keep the front at 4’ And the rest on-wall and as thin as I can get them.
