How many tubs of formula and which kind

I dont need no slamming "breast is best" bs i really dont i already choose to formula feed cause of my situation. Anyways i want to know how many tubs to get to be prepared. I already have 2 tubs of the Enfamil Newborn is that enough for the first week or do i need to stock pile more?? Also when does WIC step up and help out with formula?? Its been 2 years sense i had my daughter and dont remember