-1 for your reluctance to go through the body.
On reflection, I'm not reluctant to go through the body.
A few holes in the drill press - no problem.
Besides - I've spent all this time on the single piece, proper Alder body - I want to give it as much chance as possible to participate in the tone
?
That's the theory. That top loader is nasty pot metal anyway.
I think it's horrible too
Now must just decide whether to buy a proper hardtail; or use my approximation.
Perhaps leave out the 6 screws, so any replacement hardtail bridge will cover the holes I've made.