The STOL people prefer the manual flaps if possible because they can get the movement faster. They want extra lift or want to kill lift fast. It’s not a big plane so leverage should not be an issue. I have a friend who pretty much has to have electric flaps but his body was destroyed in a car crash. It’s amazing that he can fly at all. If you met him away from the airport, you would say no way. If it’s well designed manual will be better than a conversion.