Your closest avian vet should be one of your birds best friends. They are the ones you will need to go to when you have a problem and often times it will be a life threatening one when you are faced with rushing them to one.
If you do not have an avian vet in your area, please find the closest other vet that at least has some idea of how to care for and treat birds. Any vet is better than none at all! Here are some links to help you find the closet avian vet in your area- http://www.aav.org/search/index.php http://www.parrotmag.com/vets http://www.birdvetsnearyou.com How old should your pair be before breeding? Are they are unrelated?
Just because your pair have been though a moult and are showing signs of breeding condition does not mean they are physically and mentally ready to raise a family, just as the fact that humans can become parents at 8-12 years of age does not mean they are ready to become such. Give them at least 1 year to mature and grow. If you got them when they older than babies wait until you are sure they are at least 1 year old and not older than 4, not knowing for sure does not mean guess and hope for the best. Only breed with pairs you know the age of.
Obviously as well you want to breed unrelated birds, if you have purchased your birds from a pet store make sure that they are from different stores, and ask where they get their birds from to make sure they are not from the same source. Many chain pet stores get their birds from large scale commercial breeders who inbreed their birds, so again please be sure they are not related by getting them from different places at the very least.
If you are getting your pair from a reputable breeder please be sure to specify you are looking to breed them so they do not give you related birds as well.
Are you sure they are healthy?
It might sound basic, but I have seen many people disregard