From just looking it over, there doesn't appear to be an age restriction -- however, I'd still call someone in the Parks & Wildlife Department or talk to a place that sells hunting permits to be certain.
As for someone shipping a snake to someone, apparently the receipt of purchase serves as a permit for 21 days for the purchaser, then you have to get a permit to own the snake or you're in violation of the law. It's also something that has to be renewed yearly, by the looks of it.
EDIT: I'm assuming you're going to at least need a photo ID to get the permit. So, maybe 16 as the minimum age. Definitely ask someone who deals with permits to be sure.