Some things to consider. A LSA plane has to have the rated stall speed with all the aero aids stowed like flaps and leading edge slats. Also you know that it has to be licensed and you do to as a LSA pilot, just no medical. Scaling size has to be done cubicly, but you cant scale the environment. The air molecules are the same size no matter what; that is why the smaller you go the harder time you have keeping things the same. Biplanes have a bunch of drag; power off they drop like a brick in control. You usually have to fly a biplane powered up to the landing zone and at the last second use the drag to slow it down. A single wing will fly slower better and is more honest at the edge of being just above stall. The only thing about STOL aircraft is you cant rely that they will perform 100% in any conditions. Things have to be right to get that 50 ft ground roll. Bush pilots use it as a safety factor; they want down in 50 but have 200 extra just in case; also the good ones know when it is time to go back to a real airport with a 1000 ft or more if things are not quite right