Thanks for the replies, everyone.
The Bianchi would be seriously sweet, but I doubt it will end up in my price range. It's the perfect geometry, too. Though in the close up picture of the fork, it looks like there might be a crack. But it could just be a scratch.
The Motobecane wouldn't be a bad deal. Just not a fan of the style.
The Scattante is tempting but without knowing the year or geometry, it might be too much of a gamble. Am I being too paranoid?
The Nashbar frame/fork would be my fall back choice. I'm doing this as a learning experience but had hoped I could score a decent frame that I would want to keep around and one day build up with really nice parts (which is why I was initially looking for a CAAD). If I end up going with a Nashbar frame, I might ride it for a while and sell it at a loss to a friend just to get another person on a bike.
neneboricua