
The distance shouldn't matter after all they are at the end of the phone I imagine.
My mentors (my bitches breeder and the owner of her sire) lived in Yorkshire and Northamapton and I am in Bristol.
You need a lot of knowledge to breed properly about al the dogs in the pedigree of your bitch and those in any potential sire.
Just starting you obviously won;t know more than their names, maybe seen their pictures and known how they did at shows or in the working field.
Your breeder and the owner of the sire will have known many of these dogs inperson. Known their characters, good and more importantly bad points.
All this is vital in determining if the dog and bitch will make a compatible match to produce quality healthy and typical pups.
Without this knowledge you will be in the dark and not able to make informed decisions.
You should also start attending shows, breed specific and general championship ones to see the dogs that are there. Note which ones sire the type that you like and that places consistently (not necesarily winning), see whether the Mums have similar breeding to yoru girls.
To aid further research join the breed club or clubs and ask to purchase back Issues of the yearbooks, for at least 10 years but preferably 15 or 20 years. The breeders adverts and pictures of the dogs will allow you to do pedigree research and follow how breeders lines have developed. This information with your breeders and maybe the owner of your bitches sire's knowledgeable advice will be invaluable.
You should also get your bitch independatnly and honestly assessed as to her faults and virtues and whether she is of breeding quality. the best way to do this is to get her shown under breed specialists or at least looked at by more than one person that judges the breed.
She should also have all breed specific health tests that are used to scren dogs to reduce the chances of hereditary disease. Your bitch should be Hip Scored and eye tested at least. Your vet can take the x-rya and send it off for the BVA panel to score, but you will need to see a specialist vet on teh BVA eye panel to do the eye test.