Give the breastfeeding a go.
I had a miserable first couple of weeks - no milk at all due to severe anaemia and being on a lot of opiates, and poor DD lost nearly 20% of her birth-weight in the week we were in hospital. When they finally noticed, they switched her to formula and I got a small hand pump to try and up my supply.
Until 4 weeks, I did alternate days of formula and breastfeeding - the hand pump helped enormously at the beginning when my nipples had been chewed to bit and I was in real pain. DD never got confused between boob and bottle - had a definite preference for boob though. I was told by so many people that if I used formula then any chance of breast-feeding was doomed. It wasn't my experience, nor that of many of my friends.
By 5 weeks I had dropped the formula and loved breastfeeding. I'm lazy and since we also co-slept, I was very keen on the not having to get up at night. I could go anywhere and didn't have to plan since DD's food was all on tap.
Eventually stopped when she was 3.5 years - that was never planned and I was slightly concerned I was going to end up in documentaries. I'm very glad that I kept going through the awful early weeks as I have very fond memories of feeding DD.
Whatever you choose, it is much better to be a happy mummy than a miserable one so don't beat yourself up if you choose not to or if it doesn't work for you. Formula is a wonderful invention. Good luck!
(For bottles, I used the Tommee Tippee 'Closer to Nature' ones and their hand pump - all v easy to clean and can go in dishwasher etc).