Dale, we probably should explain why we are recommending a trainer.
A Cub has a very short nose and a very long back as compared to a trainer. This makes a Cub much more difficult to balance and fly than a standard trainer due to the very short distance between the CG and the front of the engine. A Cub can also be very "twitchy" due to the long back end as a little input can be almost non-effective while just a touch more can cause and out of control condition