Only advice I can offer is to be prepared to take care of a snake that will get potentially much larger than a ball python. Some people "hook train" their larger snakes–that is, every time they open the cage to handle the snake, they lightly rub a snake hook against the snake's body so that it knows it is being handled and not being fed; whenever they feed the snake, they don't use the hook at all. The snake will get used to the routine and eventually learn that being touched by the hook means there's no food.