I'm not relevant to any of the people you wanted to talk to... but I thought I'd throw me in for kicks...
Mutations are in 5 different classes. Class I being the worst, class V being the mildest. It's not quite that easy, it has to do with what the mutation does, but that's essentially the idea. The important thing to note here is that no one can predict each CFer's health and even mutations mean very little in the end. There's docs, clinics, meds, therapies, blah blah blah. All sorts of junk that contribute to how a CFer does. So never go by mutations alone...
Having said that, I have two pretty bad mutations (a class I, and a class II). When I was born, my parents were told I had a 50/50 chance of seeing 18. They didn't even find the CF gene until I was 5 years old. I am now 24. I still have 90% of my lung function (which means pretty much exactly what it looks like). I was in the 100% area my whole childhood. And while I've seen as low as 44% (due to an infection when I was 16), I've only lost about 10-15% permanently in 24 years. That's surprisingly little.
Mind you, I do put a lot of time and effort (and money) into keeping my health where it is. But I have been lucky in that all the stuff I do works very well and I'm still in good health, especially for someone my age. Furthermore, your child born now has a much better chance than people my age (or older). When I was born, I didn't have anything that I take now (except for the enzymes and the chest therapy --- now I take 3 nebs, vitamins, nose sprays, inhalers, all sorts of junk). I didn't get my first neb until I was 9 years old. That's 9 years of damage that I can't get back. Your child will have all the junk I have now... from the beginning. Giving her a hell of a lot better chance than I had. And I'm even doing well.
The life expectancy now is 36. Doesn't sound like much, but knowing that it was 18 only 20 years ago makes a difference. In 20 years, they gained 18 years on the average. Think of it like this... by the time your child gets to be 20, the expectancy could easily be as high as 54.
I don't want to play down the CF. It's a serious issue, and will require lots of care on your part, and her part once she gets old enough (I was 12 when I started doing all my junk myself). Even with the care, life won't be "normal". I only ran and passed the mile once (and that was when I was 13). I can't be around smoke (even in public or outside). Laughing makes me cough. Stairs are a pain in the butt. ....At the same time, I'm going to college full time, I'm engaged and have the greatest fiance ever <img src="i/expressions/face-icon-small-smile.gif" border="0">, I have hobbies, we have pets, we're going to get our own place the end of next year... So I do still live.
In short, it's a lot better these days than if you had had her 30 years ago. So basically... it's a pain in the ass, and it won't be "normal", but you can do it.
If you ever want to ask me anything specifically, you can send me a private message here (the little chat bubble button in any post that I've written) and I'll be happy to answer it the best I can. Either way, you've found lots of good resources here, so hang around.