I agree with Jeremy that it really is easier to co-sleep. I still (pretty much) co-sleep with Eli. I don't think its a big deal personally, because our kids are only babies once and if you think about it, the transition would be easier when your kids are a little older anyway. As a little baby, you can't explain it to her, and she can't understand why its happening. She will cry and cry and think she's being punished and she'll be afriad of this entirely new situation and no one will be able to expain it to her. As a toddler, you can explain to her that she is going to start sleeping in her big girl bed, and that she will be so brave and that you will be right next door if she needs you at all, and that there's nothing to be scared of and you're not far away (babies that age are still learning that things are still there even when you can't see them, peek-a-boo is a great game for that). I mean, there are hundreds of ways to comfort a toddler through sleeping alone at night. Its very confusing and upsetting for a little baby. However, if you still want to do it (I don't blame you, it can be a pain to have a baby in bed with you all the time) I'm sure she'll eventually stop crying over when she gets used to it, and she'll accept the fact that it will be the way it is in time. I've heard with some people it doesn't take long, but I've also seen a few relative's babies that scream themselves to sleep every single night because they hate going to bed alone. But lots of babies go to sleep quietly by themselves at night as well. They are all different.
One idea to try would be to have her fall asleep in bed with you guys, and then transfer her to her own bed carefully.
As for weaning the night time feeding, every baby is different and has different needs and most of the time they know what they need and they ask for it, if that makes any sense lol. I was worried about Eli still waking up a ton at night at that age too. He still woke up... shoot, maybe three or four times a night at that age still!!! I was very concerned with it (I also went through a stage at the time of trying to get him to sleep in his own bed, and I found it actually made things WAAAAAAY harder on me because I had to get up and go in his room to feed him all the time rather than just have him next to me already, ugh!!) anyway and he was formula fed at this point. But I let him go because I couldn't force myself to have him go hungry and not feed him (it seemed wrong to me) and eventually when he was 11 months old he cut down to 2 feedings at night and at about 13 months he was down to one. He stopped waking up at night completely somewhere between 18 months and 2 years. This was all his own doing, I didn't have any hand in him cutting down. He just started to sleep more and more over time all on his own.
I woud personally at least wait until her night time feedings cut down to move her to her own bed, just at least to make things easier on yourself.
I also agree very much with what Mom2Many said, that's some good advice.
Just remember, your little girl will only be a baby once, and once this point in time has passed you will look back on it and wonder why you even thought it was a big deal.
