T0X1N
Who cares if Donzo finds out? The guy takes orphans and people who could be forgotten or were never known in the first place, period. He doesn't have to worry about Donzo aggressively pursuing Jin, unless of course you break the story and make it normal for well-known geniuses to simply disappear every time they reveal themselves. Not to mention we're two world wars away from the man being the impressively scary figure we knew in canon, with him likely around 20 years of age. So what if Donzo was "especially" notified..
"Jin was excellent in all three jutsu, way ahead of the other two." Ok. then why are they still together? It sounds like Jin could pass the academy a year faster then they could AT LEAST with this much of a learning advantage. It would build continuously with Jin going on to learn new things while those two are stuck on the last thing. Realistically I don't see the makings of a team with them, Jin will become a Ninja too quickly.