Looking good man!! I like where you're going with it! Red and gold is always a classic!
Have you by chance put the rear hub in the frame and checked the chain line? I'm guessing that the 135 surly hub may put your chain father out then the one piece crank allows for. I'm currently doing a build with the same hub, and that was my experience. I'm surprised the rear spacing is already at 130. 5 speeds for the era were 120, with 6/7 getting the bump to 127.
Also, a tip for 'spreading' the rear stays. I usually take an old axle and put nuts and washers on the inside of the drop outs and work them out slowly taking turns on each side. if you're aiming for 135, keep spreading until about 150, because it will spring back. But, if its already at 130, you can just ease the wheel in for the extra 5mm pretty easy without cold setting the frame.
And for the chain. they make 3/32 single speed chains. They won't be ramped like a 3/32 8 speed chain.