I agree. It should be easy to get enough sleep when you only have one. I've known WAY too many women that started supplementing with one bottle here or a little formula there and within weeks their babies were often 100% formula fed. It seems like an early bottle is a gate-way step to unnecessary formula.
Also, I just read a study and said that ANY (that's right, even one bottle) formula introduced before 6mo's of age negates all of the life-long health benefits of breastfeeding. It seems that even a tiny bit of formula can damage the gut and greatly reduce immunities. I would only use pumped milk or donated milk if one actually doesn't make enough themselves..
I very much agree with Jaimee. I really wouldn't chance it and mess with a bottle that early. You really do not know how it will affect you and besides, if you sleep through that night time feeding you will probably wake up engorged and soaked in milk. It can be extremely challenging and frustrating to latch a baby onto an engorged breast! Since this is your first, you really can sleep when the baby does. And they sleep CONSTANTLY during that first month especially. Personally, I never felt the extreme early exhaustion people warned me about--and I think that is b/c I learned to nurse lying down (immediately) and tried to sleep when the baby slept. I wouldn't plan on doing much of anything during those first 6 weeks except for recovering and learning to take care of your new baby. It will give you guys the best start!