Dear Victor,
Congratulations on making an organized ask to a generous and responsive group!
I teach MS & HS photo, analog, digital and everything else, and I'm sure my equipment collection looks as ragtag as yours.
I don't know if you needed the ortho film for your pinhole cameras, but I used to teach pinholes that way and at some point (probably ran out of film) switched to just making RC paper negatives, and have had much better success in getting good continuous tone images (whereas with the lith film it was always getting too contrasty). My kids are able to make remarkably beautiful images using paper negs, and suddenly building 16x20+ camera formats, out of black foamcore mostly, becomes a perfectly reasonable proposition).
My unsolicited advice!
Keep it up, email me if you want to trade thoughts!
J. Miller Adam
The Colorado Springs School
jmadam@css.org