Hey, ya ol' goat! Welcome to the Forum!
:smile-new:
Many of us here will envy someone with a long marriage, and a spouse allowing a $10K budget for a guitar -- congrats on your life!!
The good and bad of your situation: there are
too many options!!! New, used, custom/boutique -- with that budget and those specs, the sky's the limit!
We're not sure where you live, so you may or may not get to play many guitars before buying; if you can't, are you comfortable buying a nice guitar online?
Steve Holst can build whatever you want, probably for
half your budget! Give him a call!
For people with shoulder/back injuries/pains, a serious consideration would be an "ergonomic" guitar -- not for strict "traditionalists" because they may
look funny, but excellent for those with open minds and ears!
Chris Forshage is in Texas, and has made some more "acoustic" models for people around here; I have a "hollowbody" version of his "Orion" model, but it's still designed for use with an amp. These are
the most comfortable (for sitting) guitars you can buy!!
Victor Baker and others make them, too. You'll have to wait a year or so to get one, but again, you'll get a comfortable guitar with whatever specs you like.
Happy hunting, and let us know what you find!
Marc