Congratulations Bill, on the new system, setup, home, retirement, and locale. Enjoy!
Your system looks great. A thought I would offer, though, is that the woofers are in very close proximity to the amplifiers, and appear to be aimed almost directly at them. Which would seem to raise the possibility of the sonics of the amplifiers being adversely affected as a result of tube microphonics. So at some point you might consider, as an experiment at least, relocating the amps such that they are not between the speakers.
Best regards,
-- Al