Very cool room BTW.Thanks.
But from what I can tell from your picts.Old pics. Sorry. The actual room is the same, but I did many tweaks over the years. A professional once cam and moved the speakers by ears. I also bought a BIG 2 seater HT seat. I put curtains to block off the bay window amongst many other tweaks. I also have an EQ.
I will have around 8 possible response graphs for every speaker based on different placements.
My current plan in order of priority:
1) The placement that has the least BIG peaks.
2) The placement that has the least BIG dips.
3) Flattest Bass Response