Breastfeeding & Formula feeding.

Im planning to breastfeed, but with me going back to school in September I started considering doing both, breastfeeding and formula feeding. I would considering pumping but I don't like the idea of bottle feeding my breastmilk. Im due July 15th. So baby will be 2 months once I start school. Any advice on what you ladies think would be the best option. And what opinions do you guys have! TIA