Well I only got to that point because I was having such a hard time getting the cash together to get him boots. Even then it was only going to be in the field here by my house. No jumps, woods, etc.
Plus it is having a slight shifting issue where it shifts up into 2nd smoothly, but after that it will only up shift if you push down maybe a half inch on the shifter, sort of "reset" it. I've torn it back apart twice now and nothing is assembled incorrectly and I can't find anything obvious that's worn. I have a new return spring on the way and think that's the culprit because in first you already shifted down to get there so the shifter is returned to where it needs to be already.
But anyway if he can only shift into second I figured he'd be ok. That bike is really fast, but first isn't exactly a power house gear.