RE: Propellers
joecoward,
I'm not quite sure what you want out of this plane. Remember that is designed to train people. It's not supposed to be super fast, as that is usually not what you want when learning to fly. If you're just now learning to fly than I'd suggest to keep the plane as it is until you get some more experience flying with it. Once you've soloed and are comfortable with the plane you can start making adjustments in the flying characteristics of it.
Hope this helps
Ken