This is too big for my shoes, if the neg is 35mm and wanting to go to 10 ft we are looking at about 120 x mag which is just going to flare out on the enlarger,
scanning and printing on inkjet I could do it in two panels but once again buyer beware the mag is really stretching it.
There fore I would not be able to do it as an enlarger print, Kevin my business partner is putting a price together for you for scan and ink print.
There are probably a lot of shops that could do it the digital route without the long distance shipping, but I do not know where you are located exactly, you are also looking to find a good shop to mount as well and usually places like Elevator prefer to only mount the work they produce , any problems with the mount and the redo of the print is a easy fix, rather than the photographer going out and getting a new print made usually at their cost.
Bob