I don't know if you're aware, but there is a continuation of Pixelmon by differents devs known as Pixelmon Generations. It seems pretty interesting. Definitely wanna check it out if you're still working on this project.
You can download the official sidemods again.The download links are available now.
So are you gonna release the map like you mentioned? Just wondering. I would just love to view the world in Minecraft VR.