it might be best to run it a bit rich while your running it in. 
and run it at a richer oil ratio like 50:1 maybe? see what beta recommend 
How old are you to be buying a new bike then? 
How long have you saved for? 
just wondering as i would love a new bike, thats what im going to save up for first when im 16 and have got a job:) 
James