I think you made a good decision.
There are some things in the info provided on their website that give me cause for concern, but I'll reserve judgement.
I don't know what area of the country you are in, but there are Vizsla organizations all over the US that can put you in contact with a known, proven,reputable, breeder. I'll tell you upfront, there really aren't as many as you think.
If you were to look at Vizsla pedigrees across the country, you would quickly start to identify some specific kennel lines common to all the top performing dogs. It takes time, a deep committment, and a not small investment, to develop a quality line of Vizslas.
You will also find that many of the top kennels, and known successful small breeders, have a one year, to two year, waiting period. The Vizsla community is not a large community.
If you tell us the general area of the country you are in, perhaps someone here on the forum can provide a few breeder names.