how many bottles if I'm going to breastfeed/pump?

Hey ladies! I hope to breast feed and not use formula (but of course will do whatever my babe needs!). I do expect I'll pump some so that hubby can do some of the feedings. Moms who have done this, or similar: how many bottles will I need? So far on our registry we have 2 of the 4 oz bottles and 3 of the 8 oz bottles. I'm going to start with Dr Browns and see how those work. Thank you!!