[@LadyTabris]From what I gathered from the game, Mr. Dragon born only needed to show off a spell; which is the completely opposite side of travelling the bloody country picking up rings designed to make you drown.
But from what NPCs have said its actually quite expensive to study there; it appears to be far more inclusive than the Mages guild so it really would require something special to get into it at that age.

Otherwise it's good, just follow the other changes posited by the Gm.

[@Apokalipse]Nothing more to add.

And on another note I have posted.