And the result!
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The good- plays great, nice and light, good tone and level of output

The bad- the nut seems too far away from the first fret, so open strings are quite flat in relation to fretted notes. I imagine I will need to either offset the nut or file the slot closer to the bridge. There is still a bit of hum even with the cavities shielded, but its the same on my strat, so is probably a normal level for single coils. I slipped with the screwdriver when fitting the string trees and put a tiny dent in the headstock

Overall pretty happy with it as a first attempt, I have learned a lot that I can apply to my next build, that's for sure