The dogs, statements made on the site seems good, just ensure that they are accurate. I would want to know more though (temperament, nerve, thresholds, etc.) which would have to be done by both talking to the owners of the dogs, meeting and watching the dogs, etc.
But all in all.. the site/dogs/breeder seem legit and responsible.
I didn't look at the website-but I would trust your own thoughts-and go see them-recently saw a mal at an akc event and was really impressed by their looks and temperment-siiting calmly waiting for their turn in the ring-have no idea who the breeder was