Yes, I think the curvy bits might end up being a hand sanding job for sure.
I probably won’t be able to come in until after 4th August tbh as am a bit busy until then, was more asking whether this is the best way to get the job done than trying to arrange assistance with a sander… although perhaps asking for help is what I should have been thinking…
I imagine paint stripper and hand sanding might take a LONG time.
It’s hard to tell from the photo what sort of paint / stain job has been done on it.
The last time I did similar it was a super thick plastic like coating rather than traditional paint / stain. I was chipping it off with a hammer and chisel, then got bored and made a new body as the timber on the original was terrible…
This looks better but photos can be deceiving…
Strip everything off it, chip off what comes easily, then I’d get a belt sander on the front and rear for speed, then work your way up the grits with the Makita sander.
For the sides set up a drum on the drill press and walk it round, should be able to get most of it, then finish up by hand.