I've seen the kits and I'm super interested. I know nothing when it comes down to it. I do know I want to be able to use the gears on my bike and from what I gather I'll need to buy a jackshaft in order to do that. I'm looking for suggestions as to where I can get a good quality kit that I can also use a jackshaft with. I plan on using this bike daily to commute. I appreciate any help I can get.