Phil,
Have you folks got any kind of an organization? Perhaps you need one. Cost could be spread and there might be no shortage of volunteer help from the CR List. I know that some builders have some stuff around (Like the 753 Certification bike that Matt Assenmacher keeps) and many of us might even loan bikes. I can't believe that most builders don't ride some of their own favorite iron that could be used, too. Perhaps some bike shops might be interested in helping, too. Especially for a local showing, I know I would loan several bikes. Maybe this is just a pipe dream, but it isn't an impossible dream.
Tom Sanders
Lansing, Mi