Hi all a confusing topic but here goes. Im exp...

Hi all a confusing topic but here goes. Im expecting my second and plan on bottlefeeding. I BF DD for 18 months so bottle feeding is unknown. I would BF again but i am studying 30 hrs a weeks. I know with expressing i need a breast pump and will be getting an avent electric one. What i need to know is how many avent bottles would i need and what teat size. I will be switching to formula as i know i won't be able handle expressing for long but am willing to try so bubba gets some of my milk. Should i then just use normal bottles or stay with avent bottles when i switch to formula. Any advice will be appreciated. [Edited on 06/02/2010]