This one is probably the longest one in this DLC. Having to craft everything requires not only quite a lot of Canopic Jars (so keep saving them as early as possible), but also a lot of different ressources, which you must own a province with the corresponding building for.
This was the faction I used to finish the campaign, as it will probably take you until after the campaign victory to have everything you need for the crafting. So save up the Canopic Jars, conquer the regions you need for the ressources and get crafting!