1) Before break in about 35-40 average and after 45-50 average stock.
2)search the forum here is one thread:
How to: What to say at the DMV - Mini Moto Planet- The World's Place To Talk Pocketbikes!
3) It comes down to your syle preferance and if you like auto or manual between the bikes..
4) Yea it has frount rear blinkers, head light, and clutch light. The x15 dosent have all of the lights.
5) Yes nos could be installed, even wet nos can also be but on.
hope this helpes.....if there is any other questions you have feel free to ask!