It would have been nice to include links and pictures.
I'm close to your height, so it's easy to eliminate some of these.
Too large:
Bianchi Premio - Steel Lugged Frame 1990s, 58 cm (Large)
Too large:
Giant racing bike 56cm e/c
Too small:
vintage 1984 trek 460
Too pricey:
Must Sell !!! Top of the Line Vintage Schwinn Road Bike
As for the remaining ones, the deciding factor could be to see which ones have working brifters.
I don't recognize the decals, but I'm no Italian bike expert either. Could indicate a respray.
Retro Guerciotti Bicycle
The KHS looks to be in good order.
KHS Flight 500 road bike 56cm Nice!
