Id do a lot of research (not here as you will be unlikely to get many balanced answers) before you make the decision particularly around costing of licences compared to other methods and if it will work for him down the track.
Get out and visit and talk to as many different training organisations as you can..
Personally if there was a way I could financially do it without sinking the ship, I would not do it the Rex way..
The kid being so young, you may perhaps look at doing it licence by licence in case he loses interest (this is not knowing your situation of course)