Is your dog pedigreed so you know it's genetic history? Does it have it's health certificates? I don't know what kind of problems a doxie might have, but health certificates as in OFA, CERF BAER, whatever. What competitive sports does she participate in?

By breeding properly, you will be spending ATLEAST $5000 for only ONE female. The cost of the pups will not cover that amount. That is why reputable breeders rarely make a profit.

By breeding her, you greatly increase her risk of cancer and uterine infection (pyometra (sp?) ). By letting her go through her first heat you also keep her at risk for cancer. There's no way to know that she may not need a Cesarean section. The health risks are great. Reputable breeders breed dogs that have no known family history of cancer. Have you gone back several generaions to make sure that there is no cancer in those lines?

Personally, I wouldn't breed. There are way too many dogs in shelters, and there are already reputable breeders.