
Certainly that is not a bad hip score, but most vets are not expert at determining what is a suitable dog for breeding or an acceptable Hip score for breeding and many have the simplistic view that anything above perfection or near perfection is poor.
For some the figure of 8 remains in their heads from when the Hip Dysplasia scheme first came into being when the parameters were under 8 clear, then Breeders letter (up to the breeders discretion) and fail, though I don't know at what level a dog failed.
Some vets also seem to think the score must be below the breed mean, that is desirable, but a dog is more than a pair of hips. A few points above the breed mean with a family history of many generations of low/average scores is far better than a low scoring animal from no known history, or worse still from a line of poor scores.
Also if their view is so simplistic I would take their guesstimate with a pinch of salt and wait for the expert assessment of the hips by the panel.
You have to consider your bitches eye status. Have you had her DNA tested fir prcd-PRA? Clinical eye tests, elbow scored.
Is she a typical example of her breed in temperament and has she been shown and/pr worked successfully?
Will you as a breeder be able to take lifelong responsibility for any puppies produced? This means you may be called upon to take back or help re-home a dog for the next 13 years or so? Are you in a position, and likely to remain in the position to take on such a responsibility?
In the meantime you need to start attending Labrador events where you will meet people with a wealth of varied experience in your breed, some of whom will be prepared/have the depth of knowledge to help guide you. A good starting point is your bitches breeder and the owner of her sire. they should have a wealth of information about her ancestors and relatives. their good points , weaknesses, what different lines produce etc.
To be a good breeder you need to have in depth knowledge of as many of the dogs in the pedigrees you are using as is possible, this obviously comes with time, so before you have this knowledge you need to use the knowledge of others,a nd also know how to research.
Club publications can be of great help if they include health results, show and working trial results as well as kennel reviews. the more years you go back the more you can see the patterns developing.
At shows and/or working events you will see the various dogs, make a note of their sires and dams and breeders and see who/what produces what. If they all look the same you have a way to go to develop an eye, and should proceed slowly. Type in Labradors is pretty varied, especially between working and show lines, what will you be aiming for?
You have plenty of time as your bitch should be around 3 years old before you should breed from her, and you have longer than that before she need have first litter. After your research you may decide she is not the ideal foundation for your breeding line, but she will teach you a lot in the meantime if you show and/or work her and see how she fares against her peers.
I warn you it is addictive.