Health tested doesn't really mean much though. What about the grandparents health tests? Great-grandparents? Did you see them or were you able to see them? I will provide 6 generations (minimum) of health tests for all genetic conditions for my dogs as well as hip/elbow scores (to highlight just how small the chance is, genetically - assuming the owner doesn't fuck it up - of my dogs getting joint issues). How old was the bitch when she was bred from? How many litters had she had? What happens to her when she can no longer be bred from? Why was the stud chosen? How was it chosen? What are both dogs/grandparents/great-grandparents personalities like (I looked at a stud recently who had a working line grandparent - immediate veto for me, not the same thing in a companion dog, but a good breeder will consider that).
Also, people always say 'my dog is brilliant, here is my breeder' and that's great.
But I own Twatdog. My sister owns his littermate. They have the exact same genetics (obviously), had the exact same upbringing for 8 weeks...everything was the same. Twatdog is, as you might have guessed it...an utter Twat. Even at 6 weeks, I knew he would be a wanky twat. Sister on the other hand? Lovely. So again, your dog being lovely doesn't really mean much...because even in litters, raised the same way for 8 weeks, dogs can be very very different.
And of course none of this takes away from the fact OP would be playing Russian Roulette with the skull issue. Isn't it about 90% of Cavaliers who have skulls too small for their brains?
So whilst I am absolutely sure your dog is lovely, the fact remains that people shouldn't gamble with their dogs health and should do far more research than having someone say 'my breeder was lovely.'
Personally, as a breeder, if I get approached with a 'I was recommended you by X' as an opening line...I lose interest pretty fast unless they have something else to back it up. I want my buyer to have done their own research into me, my dogs, the studs. I don't want them to have clicked on Champ Dogs, or MN, or KC or facebook and clicked on the first person who was recommended. It's a bit lazy (I think personally). None of that said to be harsh, but I do think it's a tad naive to throw out, 'I think I know the perfect dog for you' when so much goes into the perfect dog, let alone a good breeder.