My feeding dilema?

ok so my last question tonight .....so my last pregnancy i never brestfed pump nothin i let my milk dry up as fast as it came lol ...i liek it that way well this time my husband is really pushin for me to atleast pump ....my dilema with this is i do not wnat to feed but i am up for the pump ....now my reason is this i figure if i feed and i allow this its going to b hard to get the baby to take a bottle and number two this way i can see how much milk my baby actually gets.....so my question is if i feed do i have to keep with milk or can i bounce back and forth from formula to milk ....and even if i keep up with the breast milk for awhile will my baby reject the formula???? and last question on wic do the rent pumps? i think i may jus buy one but i was wonderin if wic rents i go there this weds ....