I have been thinking about getting the 1000 watt motor. I am 195 pounds and ride on mainly rolling hills. I doubt that I need it, but wonder if I should want it as over 300 others have already opted. Would my pedaling experience be diminished because of the over three pounds of added rotational and larger diameter mass? Would this larger motor last longer since it would not be working as hard to assist/propel me? Is the 14.4 battery included with the $149 motor update?