Re: Hi! I'm new :)
If you're planning to use your bike for commuting to work I'd suggest going with a four stroke as opposed to a 2 stroke China girl motor. My experience with both over a number of builds leaves me with the conclusion that the four strokes are more trouble free. Whatever you do, you came to the right place. Welcome to the forum!
Someday when I grow up I will probably lose interest in toys with wheels, but until then...