Rail in 35 scale will be difficult to find. The closest that I have found is 1 scale which is 1/32. I intend to mill 3/4 inch board with impressions to accept the kit supplied ties and just add my own ballast and groundwork. The three foot sections will have rare earth magnets set into the ends to allow them to be firmly set together.
If you know where to find steel rail in 1/35, please share this info and I will lay everything from scratch.