I second the vote for the zevex pump. Our is amazing. It is also the only pump that will run DD's blenderized diet. We have to bring it with us when we go to the hospital since it their pump get won't run our food.
Congrats on his birth and also him finally making it home, what wonderful news! I don't know anything about EA (except what I learned in nursing school, lol) but I still wanted to offer support and at least send some hugs. I'm sure its already been a tiring journey with much more in store but you definitely can do it and he's lucky to have you as a mama. The woman here are amazing resources as well!