
First of all only top quality animals should be bred - with wins to prove their quality at that. Secondly once you get out there into the show world, you'll start to look at the others out there, and form a preference for certain bloodlines. This, coupled with taking her back to her experienced breeder for her opinion on the quality of your bitch (and to have the non-breeding endorsement lifted) and for her advice about which stud dog, in her opinion, would be a good mate for your bitch - not doubling up on any faults your bitch will have (they all have faults!!).
You don't have to have an affix (Kennel name) but most people who want to get into breeding/showing etc., do choose one when starting a good bloodline. It's not necessary however, but your bitch must be KC registered for you to be able to register her puppies - ditto for the stud dog.
Most people won't breed until the bitch is over 2 or having her third season. All the relevant tests need to be done according to what testing is required for her breed according to the KC/BVA Schemes. Some testing can't be done until around 2 - and some need doing every year. Again I think the KC Website or her breeder should be able to advise you about that. A regular vet health test isn't near enough.
At the end of the day, by no means do all bitches NEED motherhood. Much as you may want a puppy from her, you should be aware that everytime a bitch is put in whelp, her life is at risk. It may, unless you intend to get into showing/breeding and start your own good bloodline, be better to look for a second puppy from the same breeder?