Here's what I came up with for the control layout:

So you know what I'm thinking about geometry:

And without any markup so you can see if you like it:

Well, the ghost of the output jack interior still shows up there, but I think you can imagine it away. Let me know what you think. Once we get the control layout done, all the wood pieces are ready to glue together and it will look like a real bass within a few days of approval.