I would not feed a puppy food. These foods are often higher in protein and energy and "can" create overly fast growth which may lead to Panosteitis.
If your breeder is a good breeder they will likely recommend a food that has worked well for them, do go to that resource!
I would choose a good "all life stages" food and not necessarily grain free. I would not worry about getting a "large breed" good as most of the breed or size specific foods are more about marketing than the dogs bring fed.
When I purchased my young dog the breeder recommended I feed one meal kibble and the rest a raw mix with a supplement calked "Puppy Gold."
I have a large breed (GSD) and this advice worked well, though I changed to all raw after the puppy was 16 weeks (still adding Puppy Gold).
If your breeder is a good breeder they will likely recommend a food that has worked well for them, do go to that resource!
I would choose a good "all life stages" food and not necessarily grain free. I would not worry about getting a "large breed" good as most of the breed or size specific foods are more about marketing than the dogs bring fed.
When I purchased my young dog the breeder recommended I feed one meal kibble and the rest a raw mix with a supplement calked "Puppy Gold."
I have a large breed (GSD) and this advice worked well, though I changed to all raw after the puppy was 16 weeks (still adding Puppy Gold).