Are you planning on using dowtube shifters or integrated? I have an '85 Viner "Special Professional" frame and fork that's in limbo right now like your Colnago. First I was going to convert it to a fixed gear, then just a SS, then I decided I'd rather have it all geared up, then I decided that putting cheap or Shimano parts on it would be blasphemous to a vintage italian bike, and now i'm deciding whether to put DT or integrated shifters since I think i'd like to train on it in the winter. Too bad there are only holes drilled for one water bottle...

Damn you, bike projects, damn you straight to the bank.