Welcome to Librarium Online!
I wanna make a Devilfish conversion with the FireWarriors/Pathfinders coming out of it...any suggestions?
also, I wanted to have 12 models coming out of it if possible
Well, part of the fun in converting is solving problems yourself...
You could check out the SM conversion guide in WD on how to repose marines. It could help when reposing firewarriors too, although you'll probably have to put in a lot more work when resculpting parts since they have more cloth.
It cant be any challenge at all if your ussing fire warriors. Have a base a similar colour to your armour [I hope you do camoflauge your Tau, with grey, green or light brown]. Have some corpses on the ground and the devilfish tilted slightly. Have all the hatches open with firewarroirs jumping off or shooting out of. I'd have the jumping out of the sides but firing out of the back.