Thanks for the replies. I'm glad to hear positive responses to the Campy Chorus setup- it sounds pretty good based on online reviews; I just hadn't had any first-hand experience with Campy components.
I actually met the owner at a bike shop yesterday when I looked at the bike- apparently he was thinking of posting the bike on ebay and was going to have the bike shop post it for him- but unfortunately, no one was available to take a look at my "fit" on the trainer while I was there. It sounds like the owner of the shop is the best person to take a look at me on the bike, but he's very busy and I would most likely need to schedule an actual ($$$$$) professional bike fit if I want to be guaranteed of anything. This isn't something I would want to do unless I decide to purchase the bike and want to make sure it's fine-tuned to fit me perfectly. At this point I'm just hoping for a ballpark fit so I can know whether to continue pursuing the bike or not. The bike felt pretty good when I was riding it, but it's hard for me to tell whether the fit is as it should be because I've been riding an ill-fitting bike for so long, I don't know any better! So I'm still working on that part of it- basically I'd just like a second opinion (besides my own, obviously) that the frame is a good size for me and NOT that it's just been adapted to fit me by lowering the saddle and using a short handlebar stem.