I have a Great Planes Super Sportster EP. It comes with a brushed/geared motor, speed control and NiCad battery. I haven''t flown it yet, but considering upgrading the electrics. My first question is can I replace the stock battery with a 3c 800mah Lipo I purchased and use it with the stock motor and speed controller? I also purchased a 30 amp speed controller for a brushed motor, but haven''t purchased the motor yet. Any recommendations on upgrading the motor?

That battery won't cut it. It's voltage is too high for the stock power setup, and its capacity is too low.

Any brushed "upgrade" is a step sideways. Even a cheap brushless will be an upgrade. Would you like some suggestions?

Any suggestions would be appreciated!

Thanks!