I've never fed a puppy a raw diet, so probably not the "expert" answer. I would go with 2-4% of the expected adult weight. Ask the breeder what the parents weigh.
As far as meat to bone, and what cuts have enough...you don't have to play it that close. What I think is lacking in some diets is that people are too anxious to have variety within the first week...and I feel that sticking to chicken only for the first month gives the gut a better chance to develop the proper digestive enzymes necessary to process raw. Even if the dog doesn't have gi distress I'm not sure that they're able to absorb nutrients properly especially if you are feeding multiple species right away.
On that same note, during that first month or two on chicken, the variety needs to be feeding the entire animal over time. I believe that white meat, dark meat, internal fat, fat in the skin, different types of body bones all have something to offer. In my research I have found many raw feeding advocates mention that a whole chicken is just about as close to perfect a prey model diet (from the nutritional balance sense) as you can get. So just feeding necks or backs doesn't make sense to me. And a dog must learn to accept organs as part of the diet. I think it's more important to work within the chicken species for the first month and get those things ironed out. My little dogs get whole cut up chicken parts and a variety of organs every day. The other meal of the day is different species of meat (usually boneless since larger livestock don't have many bones that a 10 pound dog can handle!!! but I balance out the calcium by supplementation)...once they had all been on raw for a few months. I think it took us almost 2 months to get all three dogs straightened away on all parts of the chicken (and I haven't found a chicken part yet that they have trouble with, just get a good pair of kitchen scissors to cut up the chicken) before we added even one more species. And add species no more than one new one each week. I take longer to add each species so that I can also try that species organ meat as well and see if there are any problems. So I only introduce a new species (after chicken) every 2-3 weeks in the beginning. But even so, I still keep one meal of the day as chicken and chicken organs.
For my small dogs I weigh each meal. I'm pretty good now at knowing what a cut up chicken portion looks like for each one of them, but I still weigh as small dogs can get overweight in a few weeks. And if it is a little over or under the amount I make a mental note and adjust the boneless meat meal of the day to make up for the amount. I also weigh and record my dogs' and cat's (raw fed, elderly) weight once per month.
There are a lot of owners recently on this forum who are starting to feed raw diets to their dogs. And I just want people to remember that a bad raw diet is far worse than a decent kibble. So your research, take the time BEFORE you start feeding the dog raw food, know what you are doing, ask lots of questions BEFORE you start feeding raw, look at the websites listed, get some books from the library, talk to raw feeders, join Yahoo groups of raw feeders, find your stable resources for food, get a freezer if necessary...don't jump into raw feeding because it seems like the right thing to do. I spent 6 months researching, finding resources / pricing, figuring out storage before the dogs even saw their first raw meal. But then I'm a research biochemist so I understand the chemical and nutritional data and how to put it together. The websites at the top of the food forum are the most informative and easy to understand for everyone. Just read, read, read...everything you can find. Then as Winnie the Pooh would say, "Think, think think!"