Amy
The research shows that >50% FEV1 seems to be the cutoff #. Above 50% and odds are on your side that the pregnancy won't affect your CF. But if I were you I would work as hard as you can to bring your #s way up. When we first thought about pregnancy I was at about 58%. I joined a gym and started to get healthy. When we conceived my son 5 months later I was at about 65% or so and the healthiest I had been in a long time. I have maintained my #s in the 60s since then. My last clinic visit I was at 70%.
Parenting is hard demanding work. I found the first year to be rather easy. But then it got challenging. I thought Beth Suffian's article was interesting. Parenting a 10 month old is much more difficult that parenting a newborn IMO. She didn't have a warm up period. I think starting w/ a newborn for me was the right choice since I was slowly introduced to parenthood. At first all I did was breastfeed and sleep. But they grow slowly so I was able to adjust our routines as needed.
I felt no need to prove anything to anybody and I'm not too full of pride to ask for help. We have TONS of family support. My dad brought me lunch several times a week for the first year. Now Logan goes to see him a few times a week for an hour or 2 (my parents live around the corner but my mom works out of town during the week). Before my MIL got sick 6 weeks ago she was coming over 2 mornings a week and also would take him for sunday evenings (along w/ his cousin). He adores his extended family and I'm happy they're here to help. And all this help was gradual as I asked for it (or they asked to take him). In fact, we asked our families blessing to have children because we knew that we need their involvement. This isn't to say that I don't think I'd stay healthy without their help but it makes it much more easy to do so.