Here is what the other Brazilian fellow answered to my questions:
CPF is the Brazilian Social Security Number (we use it a lot here), and CEP is the Zip Code.
I can give you a random CPF to use, that shouldn't cause any issues. But you need the CEP for correct delivery.
Unfortunately, I couldn't find a way to represent American Zip Codes in the Brazilian format, Graciano told me his site isn't configured for international sales.
He offered to try and send it but I never heard confirmation from him if one can ship tobacco to the US from Brazil.