Cool, thanks for the welcome. the TTR-50 is a good way to go for your son, e-start is the best IMO. If you live in Indy check this place out
www.indianapolisnationalspeedway.com thats where we run. It's a blast, we did pocketbikes in brownsburg too, but the guy running it didn't have the time to keep it going, so the season ended early.