We do NFP and haven't had any problems with it- we knew that we were fertile when all our babies have been conceived. I also use breastfeeding as birth control with much success. I have had 8 months, 12 months and 15 months without ovulation with my three other kiddos respectively. I know this doesn't work as well for some women, I am glad it has worked for us. And I have always been able to identify my return to fertility before it happened, so there was no "Oops, we ovulated and conceived before my period returned".
I've learned the Creighton Method of NFP but this last time I wanted the cross checking of the Sympto- Thermal Method so we bought the CCL homestudy course. Worked like a charm
I plan on feeding on demand (and probably no pacifier) when I am with the baby and hopefully co-sleeping. However, I will be working 3 days a week (consisting of 6 chunks of time away from the baby, length of time being gone 2-3 hrs...probably not able to pump during those chunks). The baby will probably need bottles (or some other type of feeding method, but I'm planning on bottles of pumped milk) during those times. I hope that I still get a decent amount of time without cycling.