I had thought of that, but last time I enquired with Calumet about hiring I was told the deposit was nearly as much as the camera costs! Whilst I understand why, I didn't have that kind of money to hand. Though I expect an F5 is less than the camera I was enquiring about (a Nikon D200 at the time), I expect it will still be considerable. Folks at APUG are a bit more friendly and I was hoping someone might lend me one in good faith. I long stretch I know, but you never know. I've been offered such generosity and trust in the past on here, I thought I'd try my luck again.
I forget what the cost was! Looks like you are between a hard place and a rock! I hope someone can bale you out. As far as 35mm SLR all I got is the old Canon FD stuff.