Hi Froghollow and welcome to The Cat Site. I have taken the liberty of splitting your post off into it's own new thread so more of us can perhaps see it and address your concerns.
First, just let me say how good it is of you to take these babies into your heart and home. I am sorry for the loss of their Mom though.
There are several good articles here on TCS and on the web in general regarding bottle babies and their care. The one I like est is www.kitten-rescue.com
- they have a very comprehensive resource there with a lot of really good information. I encourage you to check it out.
Also, there are a couple of articles stuck at the top of this Forum's index that may also be of interest to you.
If we can be of service or assistance, please do not hesitate to let us know.
Best of luck with the babies, I hope you will let us know how they progress.