Sorry I cant help but this is something that Im also trying to do and being new to MTW modding im finding it very hard.

Hopefully one of the hardcore modders might give us some hints on how they speed up the process.

I think it does just involve a lot of work

At the moment im trying to mod the celtic warrior (Toplessloon bif) to give it more of a wild celt flavour. This is easy as i the base figure is already done but its still slow work.