Hi Invert,
If you have to give up a child, make sure they are an angry teenager, LOL!
Your best bet would be to finish up your CAD work, sell plans, and make a million bucks from them. Well, maybe the first two out of three at least.
An eighty inch model would make a sweet electric twin.
Have you tried any of the Former Braun guys to see if they have a line on drawings?
Good Luck with your project.
Carlos G.