I have a 28"wheel, v-brake touring bike. I want to covert it to ebike, to help me with my 20 mile daily commute. After some research I've found "bafang 36V250W FRONT DRIVING SWXU MOTOR E-BIKE KIT" and "36V 10Ah Lithium Ion Electric Bicycle Battery Pack". My understanding is that is's all what I need. Can I have your opinion about above components? Is the battery size ok to cover 20mile ride ?