My opinion: I don't really like the new designer dog principle. There are millions of "Designer Dogs" in shelters. Puppies are SO much fun, but other dogs need homes too.
I think if you are going to buy from a breeder the dog should be purebred, and bred to a standard. The puppies are gorgeous, but she does have a lot of dogs (which makes me question their care). Go with your instincts, I'm sure you will do what is best for you
<--I just saw you have made your decision on this breeder, good job! lol