A red flag to me is no mention, let alone no posting of health testing. I would want to see no less than yearly 24 hr. holter, echo, thyroid sent to MSU and a full blood panel. Also hip xrays evaluated by OFA or Pennhip. My biggest brags aren't the titles I put on my dogs, but their excellent health tests. Who wants a beautiful dog that dies at 2 from DCM (and no the genetic tests don't predict whether a dog will get DCM or not) or a dog ridden with health issues all of it's life?
The advice I would also give would be to research all of the dogs in the 4 gen. pedigree to see how they all died and what issues run in the pedigree. This is time consuming but it's also very informative and eye opening.