Very nice, i am actually a little jealous, what a great canvas to start your build.
As for the forks option, I have two Orange C16R's both came with original rigid forks. I had read alot about the pairing of Pace & Orange so decided to try it out with a set of Pace RC38' Air Force on my 1996 C16R. Firstly i was amazed at how they both felt when mated together. The ride and handling was great with rigid but with the Pace fitted it was fantastic (It was properly put through its paces at the Retrobike Thetford Series a few weeks back). It was on this strength that i sourced some RC35's for my 1994 C16R. I can now confim that Pace & Orange go together like Gin & Tonic, Bangers & Mash, Fish N Chips, and many more English Double Acts. Incidentally, both are 1" steerers, so should i sell Frames on in the future the orignal forks will go back in and my Pace onto the next ride
But be warned if you didnt know already, PACE are good but like anything they need to be looked after, servicing, etc. But in my honest opinion i am more than happy with that if it keeps my PACE forks running as well as they do with my Oranges.
"Would anyone else rather be doing something other than marching up and down the square????"