If you thought that was only a matter of copy and paste files, it is logical that the AI does not do anything ... Would have to copy and paste animations, and many other folders and files more ... And check that everything matches perfectly with everything.
One thing I have discovered, trying to make the Imperial Guard (only for testing) in a RTW is that if you leave the stats as they were (stat_pri 15, 0, bullet, 70, 60, siege_missile, archery, piercing, sword, 25, 1.0) ... the game simply to CTD. I should to edit like a triarii-soldier (stat_pri 7, 3, no, 0, 0, Melee, simple, piercing, spear, 25, 0.73) ... then the game could see that it was, there was where I realized that everything is not just copy and paste.
It's a real monster-job to get results just satisfactory. I, not knowing much, I think you can, but working alone if you will be easier to meet with disappointment and insastifaccion that with the success ... You need more help, not work alone .
Take it easy
