Shuhui,
I use Lansinoh milkbags and although it says 6oz i.e. 180mls, I can fill up to 10oz, 300mls with still quite a lot of air-space at the top!!
Make sure you remove the "air" trapped at the top so keep milk fresh.
Angela,
With #1 I also used to use the separate freezer compartment of my fridge but then again, i took no pay leave until 7 months, so only started to pump 2 weeks bfore going back to work.
Still managed to feed #1 until 12 months with daily pumping at work.
I will supply some frozen and some "freshly-pumped" milk to her infant care everyday.
This time I invested in a deep freezer and started storing a month back coz taking the 4 mths only...