A high or top wing design, which allows the plane to self-correct itself, instead of constantly being on the sticks. Also allows the plane to fly easier and with less effort. And a motor that will not make the plane take off like a rocket ship
Take a look at the Hobbyzone SuperCub.
If you do already have a transmitter that you can use, then definitely go ARF. Something more like the SlowStick. Or if you want to push it a Cessna or Cub of somekind