“I’m not sure but I think some ancient Greek philosopher once said “You can never have too many clamps”. But if he didn’t, he should have.”
That is commonly attributed to Irwinocrates though many believe it may have been an earlier mentor Besseyokoulos.

“Then finally the front of the guitar (Layer 3). The part that hides all my crappy workmanship”
There is a school of thought that says “Out of sight, out of mind”
if’n they can’t sees it, then t’aint thur!