If I understand this, you are looking for an "advanced" trainer, having flown R/C high wing trainer(s) and want something to mimic a warbird? There are ways to do this. Build yourself a Sig FourStar 60 and shorten the wing one panel on each side and fly it with very low rates at the rearmost C.G. You can rig flaperons using a computer radio.

For an ARF you could try the Sig Mayhem with the smallest recommended engine and also at very low rates with the rearmost recommended C.G. Something "cheap" with tapered wings like a Sukhoi or Cap 232 would be good, also, with the low rates.

The small engine and low rates will keep you from "cheating" and trying to fly on the prop instead of the wing or snapping out of situations unrealistically quickly. Warbirds are not 3-D capable, stall and snap roll, and take a run before take-off to get up to speed. The C.G suggestion is to get you into the habit of needing to control the model at all times - which you will have to do with a Corsair.