Looking good!
BTW, we also use bean bag chairs. The kids have one each (when the dog isn't claiming one). It was a space solution for us as our HT is quite small, so it's an easy way to get 2 rows of seating so we're not all crammed on the couch, they make a great foot rest for those on the couch, and when not in use we can stack them out of the way. And they help with sound absorption as well as was already said in reference to bass traps.

Dan
On-Wall M5HP LCR, QS8 & EP500 in 7.1