JD,
I think we discussed this in another thread but check out thread linked below on Lionel Dealer Display Layouts. It's many pages but has some good pictures of layouts with PW-style control panels.
Granted most of them don't have the number of items you are planning on (although most have ZWs) but may give you some ideas, especially on attaching to the layout board.
https://ogrforum.ogaugerr.com/...-and-postwar-layouts