I strung it today with new d'Addario strings, tuned it and played a bit; it sounds great. Looks like the sanding and new finish replaced the old without changing the tone at all(at least that I can tell).
And it looks like it did new. Couple of small spots that didn't come out perfect; oh well. I'm not sanding it down and starting over for a couple of imperfections you have to look for to find, not after all this.
I'm satisfied. And relieved. Now to start trying to work back up to the way I used to play.