Hi Adric -

My recommendation is the same, if he is happy, great - you are okay for now. Some good advice I got on these boards was to basically "feed the beast" - if he's happy with other stuff but needs more math, give him more math. You might also enjoy reading a book called "The Einstein Syndrome." Also, Khan Academy is a great free resource for math. It shouldn't be the only resource since kids can game the system, but it's a great way to let him go as far as he wants with math.