UPDATE:
So I have found ALL JM-1 Alder bodies have no post holes drilled. So I won't be getting those if I want one soon, so I opted for an Ash body that was offered as an alternative. All good for me, so yeah, nothing has transpired except I may have a custom scratch plate in a few day? Maybe.

I have been researching painting and painting methods and I broke out my old airbrush and am in the process of reassebling it from broken parts etc.

I also ordered online a larger spraygun $18 for broader areas.
I am going to try water-based products. I am going to try using a spray-can sanding sealer in white, then airbrush the water-based craft colours and a brush on water-based clear.
But like I said, all in the realm of reason, I need to have a guitar first.