This sounds awesome! I really like the fact you're implementing both Kanto and Johto into the games. The plane idea is really cool too. Though, is there going to be a sort of cutscene for it, like it taking off?
Plus, I really like the Hunger/Stamina/Hygiene thing, but, how fast would they deplete? Like, by nightfall, are they really low, or do they still have a while to go until you have to stop?
Anyways, enough of my babbling, this'll prolly be a huge project, and in that case, I wish you good luck. :D