Breastfeeding questions

Adina • I`m 24 with a 2 year old boy and another on the way. Married for 3 yrs.
I want to breastfeed but I also want hubby to be able to feed the baby. I've read not to introduce them to the bottle until 4 wks or so. What if I just pump then? No breast feeding at all? Just milk through the bottle? I plan to try Dr Browns glass bottles but not sure if I should get the 4oz or 8oz??? Help pls!