RE: STOL Designs
When stationed in Pensacola back in the late 60's early 70's we used to take an OV 10 over to Texarkana and "pick-up" aload of Coors. Fly back high enough and Drop in for a landing, the beer was chilled just like coming from the Rockies.
Back to reality, the Maule I think would be a good next kit. Say in a 60 to 70 size 4 Stroke.
With all the options listed, One plane for all season's.