I am completely new to motorized biking, and have a couple of questions. I understand that it is recommended to install a front brake on a coaster brake bike, but I don't have a clue how to figure out what to buy or how to install it. My second question involves tires. I will be riding on some gravel until I can get to the paved part of the road. Should I be looking to replace the cruiser tires that come with the bike for a different type? Thank you for any suggestions