I can attest to the HSU being a very very good subwoofer. I have no experience with the Psa. The JL’s are nice, but overpriced imo. Looking at your pictures...it seems that your seating may be right in the middle of the room? My last theater room was 20x20, and there’s a pretty big null right in the center. Moving your sofas back just a few feet might make a world of difference. Just offering suggestions
you may have already found the best locations in your room