Great idea.
Agree on the wing and center of gravity comments above, and think you could go with less wing and less sweep. Wing length should be dictated by what you want it to do. If you want lower level strike type recon go with something close to the original wing. If you want high altitude, go with more wing, but a reduced sweep. Everything is a compromise.
A Gannet type fold would be great, or a grumman type sweep would also work (ala' wildcat, avenger, E2-C...)
Build it!