While I hate freezing cookies, I would make them in batches and freeze them. If you are doing royal icing I would also decorate in batches and freeze. Another option for decorating is to buy the custom cutters from truly mad plastics: the outline, the star and the funny color things. Then do the cookie in fondant. Fondant will go much faster. That said I have never frozen fondant. Good luck and let us know how it goes.