Re: New to the motor bicycle game.
The one thing I think is most important is which engine type you prefer, most everyone seems to start with a 2 stroke. I have built bikes from several vendors and found them to be close to the same. After you decide on a kit don't forget about brakes, stopping a motorized bicycle can be a challenge. Adding side pull bmx type front and rear brakes help greatly. If you don't find what you are looking for just ask, everyone here helped me a lot when I started.
Your results may not be the same,Greg