I wish you the best in making this mod! I have zero modding skills unfortunately, but am somewhat of a scholar of 40k lore, so if that may ever come in handy just ask. Also when/if (I hope WHEN!) you start working on Tau, I could provide you with model reference if need be, I own many Tau BFG models, as I am a Tau nut (see my avatar). I do not own any of the Tau Forgeworld models though, but they have good pictures of those on their website. Everyone seems to hate the Gamesworkshop-made Tau fleet, but I really like the models, they look more like legitimate spaceships than the Forgeworld ones.