That Mid Star 40 is a nice plane. But, you might want to consider a true low-wing, such as the Four Star 40. The low wing aircraft make excellent low wing "trainers" that are very capable. The mid wing'ers have some other peculiarities that you may not want to deal with for a second plane.

Fly the heck out of the trainer, learn everything you can with it, then step up to a low wing and fly the heck out of that. You will not be disappointed.

CGr.