Quote: "I read the descriptions of each model and most of them are free to use and some don't even require credit"
Well since that's settled, all you'll need to go over now is how much money you're willing to pay a modeler here to do this work for you. I looked over the models, and some aren't even UV Mapped, or textured. So be prepared to pay your modeler for not only the animation part if you want these FPSC ready, but also to UV map, texture, rig, and then create all nessasary files for you to get these working in FPS Creator.
Shouldn't be more than maybe 20-30 hours of work on the modeler's behalf, if you want
decent quality. Or, basing that rate on the hourlys from the resource I linked for you in my original post; around $400.00. But you can most likely find someone here to do the work for a fraction of that.
EDIT: Oh, and most of those weapons, or varients thereof are already availble from Errant AI either in the GC Store or in TGC Model packs. Seems a bit of a waste of money, IMO, to pay $400 in services for weapons you could already buy FPSC ready for about $30 or $40.
Kravenwolf