I am an ex rc car person getting into quadcopters. My plan is to use my old 2s car batteries in series. They are rather large 5000mah 30c batteries. My copter is 450 and has 1045 props on 980kv motors. Can i use dual rates and expos to make it less powerful, like a 3s battery? Also, will i experience a considerable amount of power draw because of the extra weight? I don't want to overload it...