Say you have the phat lewt mod located like so- C:\Users\(Username)\Documents\Larian Studios\Divinity Original Sin\Mods\phat_leewt!_0d744af0-aca9-4f3f-a113-7a6fe8c89609.pak

And you have the All Skillbooks purchasable mod files elsewhere. All you should be needing to do is create an empty folder like so:

C:\Program Files (x86)\Steam\SteamApps\common\Divinity - Original Sin\Data\Public\phat_leewt!_0d744af0-aca9-4f3f-a113-7a6fe8c89609\

Within that newly created folder you copy/paste the contents of the Skillbooks mod that was located in its Data\Public\Purchasable_Skillbooks_ed08af18-0035-463f-a405-3fa14e1b093b\ folder.

If that worked correctly (and the mods still work correctly), all you would then need to do is activate the phat lewt mod and make a new game with it.

Note that you should *not* have the unpakked phat lewt files in your installation directory where other mod files usually go at the same time as you have the pakked mod in your Documents folder, since it would read the same files twice. And I should also mention that I haven't updated the Skillbooks mod since I made it, so it might not work as it did back then.