I've got another decision to make. I need to choose between 2 kinds of jack plates. Visually the flat circular jack plate is nicest. For usability though, the angled plate is way better. The flat plate would shoot the wire straight up in the way of my hand while I tried to play it. The angled plate kicks it down and out. Lots of guitars have the jack plates in the edge of the guitar but since this body has such a deep shape I don't have enough room to do that.
Another problem: The angled plate is too big for the space it would need to fit into. It bumps the pickup plate and still hangs over the break of the body's shape.
A possible solution would be to turn the jack plate backwards and upside down. Then I'd have a convex plate rather than concave. Then the extra length of the plate wouldn't be needed and could be cut off.
This is what it would look like with the flat circular plate.
And here's how the angled plate looks.
And here's a digital simulation of what it would look like after I removed some of the metal and rebored it.
It's a weird nontraditional way of doing it, but the idea is starting to grow on me. Alternatively I could stick the jack plate in the back of the body but then the wire would always be in the way of my ever-growing gut.