A Telemaster or Sig Kadet are great trainer aircraft. Anything big is better believe it or not. Use fiberglass props instead of wood for now. They are harder to break. Get a new instructor. Remember that the elevator controls the speed of the airplane and the throttle controls altitude. You have been flying long enough to visualize what the airplane 'should' do with radio control inputs. Practice virtually. Have a flight plan when you got to the field. Fly patterned approaches. Seems regimented but it works. Also, once you are finished training you can modify your trainer with floats or, maybe, a camera for different fun! Good luck, ARUP