Thanks for the replies. A local camera store actually has a couple of LF cameras and a bunch of lenses available. Schneider lenses and Nikkor lenses including the 65mm.

The three cameras they have are the Toyo A-II and the Toyo G-II and the Sinar P2.

I'm guessing the A-II will be the lightest and simplest of the offerings. Since whatever camera I get will be coming with me to 12,500 feet, I want a light camera! I don't think the shot I have in mind has any particular technical challenges with tilt and shift movements, etc. I just want the mega resolution that only LF film can provide.