I understand where you are coming from Mel, in the end for us it was easier to exclusively express. It just became a part of life after a while
You've been given good advice here Mel. I second it all!!! Pumping at night at least for a while, every 3 hours, double pumping and a hands free pumping bra I think are the best. My hands free was one I bought that went over your normal bra so you don't have to change bras to pump. (if you want to try it I don't mind sending it you you? I won't need it for a while and maybe not at all for the next bub) I'd offer you my big medela pump to but its with another friend.
You could always hire a double pump too. The ABA hire them cheaper for members.
And do you have good storage for your EBM? The medela bags are good and the avent cups. Cheap 250ml Happy Baby bottles fit medela pumps instead of using their small ones!! Another BBer told me that and I never looked back.

Good Luck Mel