I sterilized my bottles before taking them to the hospital. Just put all the bottle parts in boiling water and let them sit for a few minutes. The bottles we bought had sterilization instructions on them. You only sterilize them the first time you use them, and then just wash them by hand or in the dishwasher (with a special dishwasher bottle rack) after that.
I tried to breastfeed with both of my kids, and couldn't. Don't worry about the people who want to beat you over the head with the breastfeeding message. It is YOUR choice. Just be prepared to deal with them, because they will come out of the woodwork. Both our kids were formula-fed and are just fine.
With our first child, I tried to breastfeed for 6 weeks, mostly pumping and bottle feeding, so I didn't take bottles to the hospital. With our second child, we took the sterilized bottles and our Good Start formula, but the hospital would not let us use them. They insisted we had to use their little 2 oz. bottles. It didn't hurt our daughter, and we put her on the formula of our choice when we got home.
I would suggest contacting your hospital now and finding out what their policy is so you will be prepared ahead of time. I was not happy that I couldn't use the bottles and formula we brought for her because I didn't want to start her out on one formula only to potentially upset her stomach with a formula change, but it turned out fine in the end. Find out now and that will be one less hassle for you to deal with post-partem.
Good luck and enjoy that baby!