The map is complete!
The map: https://i.redd.it/um7wns2jnl521.png
Album of locations and directions: https://imgur.com/a/XIP1jiE
A pastebin of all the the Codex entries: https://pastebin.com/xa8ZBjib
I keep having issues with the map failing to embed properly so you'll just how to use the link sorry. Probably because of it's size.