I know that I've said this before, so forgive the repetition if you've read it already, but.....
Please, please call the Newfy Club rescue person in the breeder's area for a reference on this breeder before you continue. I know that you said that you're interested in a rescue pup/dog also, so you could explore that at the same time if you like. Rescue will know if this breeder is as reputable as they say.
Halley's breeder is listed with the AKC & even today is in "good standing" with the Pyr Club & her dogs keep consistantly winning in the show ring. Though how she can be in "good standing" is beyond me. You won't hear anything bad about her or her dogs unless you talk to someone in the local rescue or other local breeders. Now, I might have discounted this type of info in the past as "sour grapes" b/c her dogs win so frequently, but not now. It's a tough call, but you have to decide who to believe.
After losing Halley at 3 y/o to bone cancer we found out that her breeder has a lot of cancer in her bloodlines & as she is closely line breeding, it is a very sad situation for the dogs & those of us that love them. This breeder is also known to be a nasty b----- and she won't pull her own dogs from rescue without a big fight. I checked her AKC & GPCA standing before we bought Halley, but I wish to Heaven that I'd checked with rescue & the other local Pyr Club people ahead of time. I'm afraid that this is more common than most of us know/knew. If we can all stop buying pups from the breeders whose dogs win at the shows, but die young from genetic problems, maybe in time we'll slow down their breeding program. If so, we'll be doing the puppies a huge service, as well as saving ourselves the heartache.
That all being said (and sorry it's long), I'm sure that you & Dan will find a wonderful puppy or dog that will make you both smile and fill your home with lots of happy dog sounds again.