Don't you just love it when you stumble across a deal like you did with the Accuphase!
You are right about your room, I would of never guessed that your TV is 65 inches. Have you ever tried throwing a blanket over the TV just to see if there was a difference?
I would like to try my TV between my speakers, it is a 52", but I am afraid it will hinder the sound too much. I was at my local stereo shop not long ago and when they raised the motorized picture screen that was between the speakers I was amazed at the difference, granted this was a much bigger screen.
I concur, you are very fortunate, I would really like to hear your system, then again it could cause that tail chasing thing!