I'd await more informed answers than mine but my gut feel is that you could do a lot worse if you want to but a complete Colnago with very useable parts to enjoy and ride. If, however, you are planning to upgrade the thing (whether to all new parts or all original, or just a nice matching groupset) then by the time you flog bits off you'd have been better off just buying a frame and forks.
I'd await more informed answers than mine but my gut feel is that you could do a lot worse if you want to but a complete Colnago with very useable parts to enjoy and ride. If, however, you are planning to upgrade the thing (whether to all new parts or all original, or just a nice matching groupset) then by the time you flog bits off you'd have been better off just buying a frame and forks.