The hanging parallelogram Campy rear derailleur with the Modolo Mach 1 brake calipers just seem right and I really can't imagine modern components on your bike... Celeste and Campy is a long standing tradition and still holds respect with all the roadies that I know and ride with. I'm by no means a purists, I'll rip a bike down in a second with no thought to originality, but nearly all 70's and 80's road bikes lack the pedigree that yours has. Modern components on a whatever bike is fine by me but not a Celeste Bianchi, especially one with Campy. For what it's worth, the MADE IN ITALY sticker demands to be preserved as well as the rest of the bike. Find something else to customize and modernize, something with a quality frame but has outdated parts and wasted paint, one that the seller is happy to unload cheaply. That's the proper bike for what you want to do... this one should stand as is... sell it to a fan of Celeste Bianchi bikes and build the bike you desire.