I truly appreciate everyone's interest in this project.
Being involved in both the administrative and instructional ends of education, as well as chasing my kids around to various and sundry activities, doesn't leave much free time during the school year to work on this project.
I've also reached a bit of a "fork" as well. My original plan was to recreate the cockpit & crew area of the TBY, using as much original material as I could get my hands on and recreating the rest in metal--basically learning metal forming skills as needed as the project progressed. The biggest obstacles to progress are the price for aluminum sheet/plate, lack of complete structural drawings, and my personal limitations in certain metal-forming techniques (oh yeah, and the free time thing

).
Because progress has been slow, I've been considering more and more going the route of creating a TBY mock-up in wood--much in the same way the manufacturers developed proof-of-concept designs in the 1930's & '40's. Pics like the TBF mock-up below make much more sense to me in a financial sense than working exclusively in metal (as well as maintaining personal sanity). Since serious gaps exist in my collection of engineering drawings, I would think working extensively with wood might give me a more cost-effective means of getting the whole dimension headache resolved as well.
Always open to suggestions (and monetary donation!

).