Just be aware that there is often a big difference in energy level between field bred goldens and confirmation goldens. If you’re used to a low key golden and get a high energy field bred golden, you may be in for a surprise you weren’t expecting. Spend some time researching breeders and their dogs. Spending some time with the parents will give you some idea of what to expect as far as energy level. I had 2 goldens that were more from confirmation lines that were both great hunters but both on the low end of the energy scale when not hunting. I wouldn’t say that any dog will hunt but if you start them at a young enough age and expose them to enough birds, most will.
I can’t help you on particular breeders but can assure you that there are plenty of good breeders and I wouldn’t narrow the focus on “English” goldens. A reputable breeder isn’t going to breed unhealthy lines. You should expect to pay around $1500 for a well bred dog and waiting a year for a puppy wouldn’t be unreasonable.
For training I would recommend finding a HRC group to train with near you. Bill Hillman has an excellent puppy training video. Graham Evans has an excellent training program for past puppy stage although he has a good puppy training instruction as well.
Gently get the puppy exposed to gunfire early. A gun shy dog is a major handicap for hunting that often can’t be remedied. Also introduce them to bird wings early to get them interested.