As such, I sprayed the topcoats on the body shell yesterday:
It doesn't look quite so good up close - lots of orange peel ripples to polish out, a couple of small runs, and the edges where the wood meets the metal are a bit rough. It does feel good to have made some visible progress again.
Now that I've finally got the masking paper off, I decided to try starting the engine again. The needle valve in the carb had stuck closed due to lack of use thus preventing any fuel from getting to the engine, but it was an easy fault to find and she fired up straight away when that was sorted.