Won't work. The ailerons are too close to the plane's center of gravity to effectively and reliably control the pitch of the plane, especially with the conventional tail way out back stabilizing the plane. Notice how elevon-controlled planes are flying wings or delta wings where the elevons are far enough behind the center of gravity to get some "leverage," or there's no tail sticking way out back to stabilize the plane.

A P-38 would look kinda silly missing it's tail