Assuming you like an Al frame and it's in good shape, never wrecked, etc, it's probably a good deal. But if you can't afford to build it up, that sort of defeats the purpose, eh?

Bringing in old parts ain't a big deal. It's not like they'll hurt the frame, just know that if you want to really take advantage of that slick ride, you'll have to put together a piece-by-piece upgrade plan.