An update:
This weekend I went and got myself a 1988 Gios Compact 54cm. It comes with chrome Gios fork, Campagnolo headset, and the original adjustable dropouts are in good shape.
I picked up the X-RF5 hub because it's got a decent range of ratios (256% from low to high - with the sprockets I'm using that'll give me ~40-100gi), and Sturmey Archer makes a bar-end shifter for it. Velocity Deep V's are on special order from the factory (machined SW, 36h, reflective coating), and I've got an SA 36h track front hub & crankset, Campagnolo Veloce calipers, and Tektro levers on the way.
Today I picked up a replacement for my stolen Vernier caliper, but I wussed out and bought a digital one because I'm too lazy to read a Vernier scale these days. Time to take some seat tube and steering tube measurements and figure out what will fit this sucker.