Either plane is a great choice, it really just depends on what kind of flying you want to do. The Cub will require more attention to flying than the Kadet will and the Cubs depending upon the kit you choose will be a more difficult build. I have been flying for over 40 years but I built a Kadet just for the sheer fun of the way it flys. The Kadet is easy to modify and just loves to fly no matter what you do to it. I added barn door ailerons with dual servos, tail wheel, bolt on wings, removed the windows, changed the nose and put on a Saito .82. That is one big wing so do not be shy about aileron size, you can always add expo if you use a computer radio (maybe I am spoiled)!
Here is a few pics. My plane was covered with whatever Monocoat I had left over from projects, which explains the different colors.
JEB