Started with 58' eyelet to eyelet, it was not happy there so I went to 56'. Trust me, I like to fly slow, but..... This model dictated a faster lap time. Y&O 9-5, eventually trimmed 8 5/8 x 4.5. It let the 19 rev a bit since they do not run like a typical 35 stunt. Plus I needed the ground clearance! Three ounce tank was as much as I could get in there. I am typically reluctant to notching wing structure. This model was built in Classic fashion, i.e., fixed leadout and tip weight, plywood elev horn, cloth hinges. I even used a hardwood dowel for the elev hingeline, like shown on the plans. :-)
So having said that, there could be much more done with this model given all the kitchen sink adjustables.... But, I liked building it this way too. I could see another one with maybe a 20/25 FP/LA and make every effort to keep it light. Like we start every new stunter. Lol
Something about hearing that hard crackle of the unmuffled 19, tho. And the smell of burnt castor.