Royality Free License and using bought models with my models

Hi, I have a question about Royality free license.

Is it possiblle for me to buy for example this model, make a lowpoly mesh based on it, bake it, texture it and rig it and then sell that model here? Or would I be violating the Royality free license.

I wouldn't be selling just the plain hands, I would sell it as FPS pack with weapons, animated and have some more variations (sleeves, gloves etc.).

Based on what I read in General Terms and Conditions this should be ok to do since I wouldn't be reselling the same model I would just use it as highpoly for the bake but I would still like for someone to clarify.

Thanks