Welcome to the forum, you've come to the right place
If you don't show them how do you know they are good enough to be bred from? Many many dogs come from excellent bloodlines but it does not mean they are anywhere near good enough to be bred from.
These are your pets, I would enjoy them just as that, pets.
If on the otherhand you are serious about breeding and are prepared to have all the relevant healthchecks done etc then start by talking to your girls breeder. If they are from top quality bloodlines then they would be willing to give you their honest opinion as to the validity of this idea and the quality of your girls.
Start reading as much as you can about what breeding entails and the likely costs - emotional and financial. You could start with our
FAQ on the very subject. Then get hold of The Book of the Bitch by Kay White, it's the reputable breeders bible

Most breeders who do it right don't make a profit out of breeding, they do it for the love of the breed.
Sorry if this seems harsh - in many ways it's not meant to be but in some it is. So many people sadly think breeding is a game which as many can testify it isn't and the costs can be massive especially in emotional terms.