Even if your oldest likes habaneros, exercise extreme caution with the ghosts.
It’s a fifteen minute ride. 9 up 6 down. It continually gets hotter for 9 full minutes.
My oldest used to smoother his food with the Dave’s Insanity Hot sauce - the really hot, special reserve stuff. Then the sweat would pore out of him. We would all laugh.
He might be able to take ghost peppers.