Where were you when I had a Summicron that was useless to me?
Unfortunately, it had the worst cleaning marks I've ever seen, but otherwise, it was impeccable. I traded it for a Canon (because I couldn't pay for the repair) and then traded that (with a Canon VT) for a Speed Graphic.
But to be honest, I've kinda always wanted to play with a Pentax 6x7. I've held one, but never gotten to run film through one.
Anyways, good luck. Looks like you already got at least one result.