First of all, don't listen to what others say about what you do in your home. Those decisions are best for you and your husband. If co-sleeping makes you and the baby comfy then as long as your husband is on board, then don't worry.
Second, although you are comfy, I do believe that your baby won't wake up as much to nurse if she is not in your bed. My doctor told me when my daughter was 5 1/2 months that she needed to go to her own bed. At that time I was enjoying her in bed with me also and she nursed every couple hours. When I moved her to the Pak-N-Play in my room, she slept for about 5 hours straight. The doc said that the movement from me or my husband was probably waking her up and that's why she woke more. When she was sleeping by herself she was getting better sleep and so was I. I nursed a lot less in the middle of the night, but when I did she came back to bed with me. Then I would put her back in the Pak-N-Play.
Third, if you are still nursing then she will still wake to nurse but maybe not so often. If she is in your room then she will still feel close and so will you.
If she is crying, then it will only last a few days. They say everything takes about 3 days for them to learn, but it never took that long with my girl. By the second day she caught on. It's painful to listen to your little on cry, but it's temporary and well worth it.