pathfinderkingmaker Mod Idea: Artificer class

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I was hoping at trying my hand at Kingmaker modding by making an Artificer class, but further research suggests the class I was looking at is OP (https://www.d20pfsrd.com/classes/3rd-party-classes/adamant-entertainment/artificer/).

 

Alternate classes I have found are the Artisan (http://www.d20pfsrd.com/classes/3rd-party-classes/drop-dead-studios/the-artisan/) and a converted Eberon Artificer (https://sites.google.com/site/eberronpathfinder/conversion-info/classes/artificer). I haven't checked to see if either of these are viable.

 

How should I proceed? Is the Adament-Entertainment Artificer ok? Should I change it (balance suggestions are available)? Should I go an alternate? Is there something from Numeria that could change the above?