Are You Breast Feeding Or Bottle Feeding? Why?

Breast and bottle..
i wanted to only breastfeed but noticed that i didnt have enough for him.. so i am offering the breast first and then the bottle with formula after wards... i am also pumping until i get a nice flow so i can stop the bottle with formula and just give breast again..
my reason i only got to bottle feed my first.. and its so expensive.. and i know the breast is best for baby!...