Bryan-
On the "overlap" you mention.......what might be better distances?
I have the monitors in 5' as I have always been told to try and get them into the room and away from front wall.
The old rule of thirds thing would put them at 8.33' which is not feasible really.
I have an approximate listening triangle of 9' then with speakers distance between them and to the listening spot
which is about 15' back from front as noted. Actual listening distance from speakers is closer to 10'.
Can easily try some different distances and move the big panels up front.
Maybe some diffusion on the rear with a commercial product like yours, or some big hanging plants.
Thanks.
--Tony
PS- Sorry for the dumb question.....what is SBIR??