I have to question the lens selections for this number of cameras. Ebay, KEH and everyone else will be sold out of the selected lenses long before you reach your goal. I admire your effort. I have well over 50 lenses and none are any good for this camera. My three 90's are all the big double 'horn' affairs that just won't work. I don't want to buy another 90.
I am sure there are many more American Press camera lenses out there, you could have chosen, rather than what you have chosen. I only saw you initial post today, as I am Jonny come lately. I wonder who decided there was 750 of this type lens ready to use...with camera buyers.
Great idea, I want you to succeed, but I don't have a lens.
Good luck!
Now let the hammering begin...