Milk Storage Bottles

Hi I am a FTM, would like to seek some advice. I am planning to breastfeed my child until about 1 years old. I have a number of milk storage bags (about 200) which I am planning to use only when I return to work after my ML. During my ML, I am planning to latch on. I heard that we may still need to pump the excess even with latching. I am planning to use storage bottles/containers when I pump at home. Any advice how many of such bottles and containers should I get so that it is sufficient? And how much milk should be stored in each bottle to avoid wastage? TIA!