I used the Medela Swing. I pumped into their bottles (also Pidgeon narrow neck bottles which fitted too). I tipped milk into normal ziplock bags to freeze. They're much cheaper than the special BM bags.

With both my bubs it was trial and error to find a teat that they took to. In saying that though, they were not premmie and not even newborn when I started giving some EBM. Hopefully your little one won't be too fussy!

Good luck with your little bubba OP.