That 270mm would be very nice indeed, but it wasn't that long ago that Robert White and Badger Graphic were practically giving them away at close-out prices(one nice thing about living in the past is that it was nearly always cheaper if it dosen't involve digital) I think Jim Galli can make you a way better deal on a 240mm.
IMHO G-Clarons are brilliant lenses. If there weren't so many good used examples out there, a new one would be a most worthy object of GAS (Gear Acquisition Syndrome).