Mapping Pokemon? Check out my Pokemon Metadata Library!
In it contains a lot of useful information, as well as an assortment of official sources, that you may need for the metadata of your map.
because this is such a massive map, you don't (and honestly shouldn't xd) need to mod it entirely, feel free to pick any timestamp you want to start modding from, and for as long as you feel like it's fair to do so. i fully understand if you deny though
(also if you feel like m4ming would be better instead of nm feel free to pm me)