More... The front, right half of the room opens on one side with a ½-high wall to a closed hallway, and the back, right half of the room opens to another hallway and also to a second open area to a den. Basically, the back half of the room - with the vault - is open.
The CC is directly in front of the seating position and is tilted up about 30 degrees to aim directly at the listeners’ ear. The CC, fronts and Infinity sub are on a similar line facing the seating area, with nothing in between them and us. There is a large rug on the floor between all the speakers (including the CC) and the seating area.
The suggestion of buying one Sub 1 now and getting a second one later is a good idea. I like having two subs and having them matched will probably improve what I am hearing/feeling.
The last issue, that I didn’t want to muddy the waters with, is that we will probably be moving in 6 to 12 months. Unfortunately, we don’t know where we are going. But at least, we will be taking our HT equipment with us (again