At this point - other than time & possibly a small amount of material- what do you have to lose in trying to modify what you already have?
FWIW though, I'd probably remake them.
"Life is what happens to you while you're busy making other plans." - John Lennon
Scott, with labor being a sash why not just make new doors and use these as a start for some shop cabinets? They’d be really nice shop cabinets!
Yes, this is literally "cutting corners". I'm not totally against repairing the existing doors but I'm not into sanding paint and plugging holes. If they can be repurposed that would definitely tilt the decision.