Of course you're not selfish. You're just being honest. I have to say, the first weeks are the hardest, so if you really want to bf your daughter, I promise promise promise it does get easier. It does take perseverence at the beginning, and yes, it can feel claustrophobic, I agree. But for me- still bf my 7 month old, having moved to mixed feeding actually- it really has been worth the effort at the beginning. Those who say bf is hard are right, on the other hand, but it gets so much easier after the first 6 weeks or so, basically after your milk supply is established.
One more thought. Perhaps you're not going to like what I have to say, but giving a bottle this early on doesn't do you any favours & will probably contribute to the difficulties (and believe me, I do know about sleep deprivation; my boy was an abominable sleeper from the beginning, we've made a huge effort to help him to sleep better without giving up bf, including working on his routine, so I think I do know where you're coming from). While I don't believe a bottle is the end of the world (and as I said, I've done mixed feeding for 3 months now, after the initial 4 months of exclusive), at the beginning it's important to work on getting your supply up. So, one way around it is to express around 10 pm, close to the time your DH feeds the baby. I'm just saying this because it does get easier, but in order for bf to get easier you have to give your supply a chance to really get going, and even one bottle during the day (which may actually mean quite a lot of hours without you bf) may not work to your advantage, unless you express at the same time.
Anyway. Hope this helps. I know it's very very hard at the start, and I also know that bf at times can be very very frustrating, difficult & depressing. Especially at the start. But this stage doesn't last, or at least that's my experience. I do realize that some women never do enjoy bf, and that's a perfectly valid experience too...