hi, so im planning on buying this hub maybe tonight but need to know something. So.... you can shift the bike with the hub, meaning you can run through different gears as your riding down the street? im looking for a bike on my farm that i can get from one side of the 400 acre street to the other, soo i need something that can cruise comfortably at 30-35mph with this hub i can shift through gears to make this speed easier on the engine right?