Hi, recently I've purchased a 20" Tricycle for my wife and installed a BEWO 350 Watts Mid Mount motor and although I am very impressed with the outcome I have second thoughts about power. Would be possible to change the Batt for bigger one and the controller without doing any damage? or should I change the motor for a front Hub (say 500-750 Watts) with a bigger Batt (48V) . Thank you for your input. Regards Clem