Joined: Sep 2008
Posts: 1,787
Likes: 350
From: Tepic, Nayarit, Mexico
Bikes: 48 Automoto, 49 Stallard, 50 Rotrax, 62 Jack Taylor, 67 Atala, 68 Lejeune, 72-74-75 Motobecanes, 73 RIH, 71 Zieleman, 74 Raleigh, 78 Windsor, 83 Messina (Villata), 84 Brazzo (Losa), 85 Davidson, 90 Diamondback, 92 Kestrel
Building it up from scratch is fine, even necessary, if you're picky about which parts you're going to have. If you're not that picky or don't really know exactly what you want, then get a complete bike. I would say most of us here are fairly picky.
If you want a fully Campagnolo-equipped bike, it will be much cheaper to get a complete bike. There are plenty of them out there.
I built up an Olmo frame with 1980's "alternative Italian" components like Galli, Ofmega, etc. I got most of the parts on Ebay. All Campagnolo copies but no Campy on this bike. They look great and perform very well, and were not that expensive.