Actually, I think either the Top Flight T-34B Mentor kit or Top Flight Contender kit might be a good choice for you:

http://www.top-flite.com/airplanes/topa0160.html

http://www.top-flite.com/airplanes/topa0210.html

Both of these kits can be built with flaps, and both would be pretty good transitional planes to fly before stepping up to a scale warbird. The only drawback is that both of these kits are designed for tricycle landing gear.

You might also wish to reconsider the Sig Four Star kit. One of the reasons that this kit is so beloved is that it is very "bashable." If you want to make your Four Star .60 kit with full flaps and ailerons and put four servos in the wing, you can do it. You can also take a rib out of each wing half to make your Four Star less of a "floater" so that it handles more like a Super Sportster instead of a low wing trainer.

I think building a Sig Four Star .60 kit and modifying it to your preferences will be the simplest path for getting exactly what you want. Your second best choice would be to build and fly the Top Flite T-34B kit with flaps. Then the biggest change moving to the Corsair will simply be the tail-dragger gear setup and the higher wing loading.