Wow, that is AMAZING, as for the routes, I want a water route between Cinnabar(which is NOT a town anymore, as this is 7 years after RBY) to snow point. And I don't want battle island yet, as I don't even know if I'm going to include it.
So!
Cinnabar-snowpoint
Hoenns Ocean-Canalve city
Hoenns Ocean-Slopoke well(Azalea town)
Also, the Illex forest begins exactly after Azelea.
As for Orange Islands, here: