I can't help, alas, as you've already been directed to the repository of all that is Violin Bass. Neato projectum you have. I like how incredibly thin it is, and the control cavity – curvaceous!
I find the clunky-looking rectangular control plate that is on all but the earliest Hofner and most clones to be quite fugly and ruins the looks of violin-shaped basses. Viva the earliest Hofners and the Kliras etc!
Please continue to post pics as the project continues. If you decide to pass on the project, please PM me. Even if it is nearly the size of the entire bass, might I suggest a Darkstar pup?