So I ballsed up the next stage of the guitar rebuild today, but ended up liking the outcome...
Headstock looked like this (stock image)
I wanted to put a custom decal on, so I sanded it off, but it left a faint ghost of where it used to be... So I thought OK I'll try cutting a bit of satin silver vinyl to fit the headstock, turns out that was very difficult. So I thought OK I'll paint it silver, so I masked it up, and painted it silver:
Then I decided that I didn't really like it silver, so I'd do it black, with this as the inspiration:
So I sanded it back, and painted it black, the paint reacted, so I cleaned it off, and tried to brush paint it black, but I couldn't get it looking any good so I wiped the half dry paint back off again, and sanded it all smooth ready to try something else...
Then I thought "you know what? That looks like natural age and wear and tear..." so I oiled it and put it back together...
Also I discovered that the body is indeed routed for any pickup configuration, so no chiseling required! But I will need to drill some holes for the new scratchplate which is an 11 screw type not an 8 screw type...