I recommend X-Plane. There are some nice models available for download and the landing gear behavior and flight mechanics are much better than FSX. A tailwheel plane actually flies like a tailwheel airplane. Flight controls are to your preference, I use a Logitech Extreme Pro-3D, because I don't like kicking the rudder pedals under my desk all the time. If you want the feel of the pedals there are several with and without brakes depending upon whether you your Cub has brakes.