I have already started saving for the JFK! But, there would be a lot of work to make that conversion to the Connie. You would have to rebuild the overhang and deck around the leading edge of the angled deck, reshape the funnel and island to reflect differences, alter all side sponsons, etc. It would be a major project. It would be easier to start with the Tamiya USS Enterprise hull, but that would present its own difficulties, including shortening the hull. Good luck!
Bill