Other people have mentioned some good links, I just wanted to offer the thought that if your can perhaps try to combination feed. Boobs are very physically convenient and it's nice not having the bottle admin, but having formulas fed one child and breast fed the other, overall I found brest feeding much, much harder personally.
When bottle feeding, I literally only did every other night, as I fully shared the job with my husband, so I was getting 7 hours unbroken sleep every other night from birth. With my breastfed baby, she's 2, still feeding and I'm yet to have a full night sleep. I've dragged myself out of bed multiple times a night with raging cold, fever, v&d, uti's, you name it, because it's all on me. She (like many other babies I know) refused bottles, hence why I couldn't combination feed her.
I'm not saying don't breastfed, far from it, if you have a desire to, that's great, and go for it. But don't do it because you want an easier life. If you've got a decent involved partner then you have the wonderful advantage of being able to share the job, have a night out with friends, have some unbroken sleep.