>>1948737That's gorgeous
you don't necessarily have or even want to cold set the frame. See how hard it is to just jam it in there first. Also see if you can't re-space your rear axle by removing some spacers.
>upgradesSeatpost. Will make a tangible difference in ride quality, weight, and adjustability. Is it some meme size?
I love that you've stuck with the centerpulls. Those brakes look beautiful. The pad upgrade is fantastic. Check how much the front hanger flexes. Often those flex pretty badly and that is an area where you can improve the system.
I think you probably want a more relaxed bar/stem. If you have 25.4 drop bars you can just use a mtb stem, even one with a canti brake roller. Pic rel is a nitto noodle & nitto specialized 26mm dirt drop stem. You can get a technomic off the shelf for 26 bars.
You also do lose power with old non-aero levers, but well, they look cool.
Your bar tape is wrapped too loosely.
I would look for a smaller inner ring for that crankset. It's clearly physically possible. The cutouts are incredible. Is that a home drillium job? Either that, or a nice old road triple like a TA one if you can find it.
Top tube cable clips as mentioned. Lots of nice oldschool ones floating around.
Also it's not a lightweight race bike. You should run a rack or basket or something. You can actually get MAFAC miniracks for centerpull brakes. I have one. They're extremely dainty but work well for handlebar bags. Easiest is just run a rear rack with p-clips for the upper stays. If you want to splash cash look at those Tubus Fly etc the really svelte ones. When you get p-clips try get the ones with nylon coating, not rubber, they're more rigid.