The Jack Stafford Comanche kit would appear to be just the thing. It has a wingspan of 72 inches and is very scale. Also flies very well. Jack Stafford went out of business last year but there are probably some kits still available. If not a kit could be cut by one of the custom cutters or you could cut one from the plans. I built one 1 1/2 years ago. I finished it with fiberglass cloth and epoxy resin then applied panel lines and rivet details. With flaps and retracts the weight is about 10 lbs. I am flying mine with a YS63 four stroke.