BINGO!!Can u ride a no bar hand clutch bike? If not, Lower it, do the clutch mod, clutch stack at 1.99, heavy springs, and set the air shift kill At like 50-60 and start learning. Don’t worry about nitrous, the shock, or going fast. You and your son take turns practicing being smooth from the launch to 330ft.
Just leave it stock and get seat time. Work on going 9’s 100% stock first then slam and prep it with Brock’s basic mods until you are low-9 or high 8’s. Once you’ve perfected that, then start with the nitrous and go for low-8 high-7’s. No reason to spend a bunch of money or any money until you can use what you have. I’d even recommend you throw it on a dyno just to verify the bike is healthy before racing. You don’t want him learning on a bike with any issues and get frustrated changing parts that might make any problem worse or harder to diagnose.
Welcome to the forum and enjoy the time with your son!