My wife and I seem to be getting serious about raising BYC's for eggs. Since we live in an urban area we want a small flock, 3-4 chickens. I am sifting through tons of information on breeds. Any recommendations?
Some breeds that would probably work well for you would be Orpingtons, Australorps, Wyandottes, and Easter Eggers. All of these breeds have a reputation for being docile as well as very good egg layers. I'm especially a fan of the Wyandotte. Mine laid very well in their first year, with one of them reaching 299 eggs. They continue to lay pretty well, though they are now four years old. I also have an Easter Egger, who has been quite docile as well and nearly as good a layer as the Wyandottes. Many members on here keep Orpingtons and Australorps and consider them to be extremely good layers and one of the tamest breeds.
We have two toddlers so prefer
very calm birds, reasonably quiet and suitable to the NW climate, while maximizing egg production.
Is it best to mix the flock up with different breeds, or does that matter?
In many cases, I think that it is best to mix a flock up with different breeds. It allows you to see a variety of different colored chickens and get a wide variety of eggs. You can learn which birds have the best personalities. When you get future birds, choose the ones that you liked best. I keep a backyard flock of four chickens. One is a Columbian Wyandotte, one is a Silver-Laced Wyandotte, and there is also a Rhode Island Red and an Easter Egger. These four varieties and three breeds get along very well together. I get a lovely pale tan egg from the Columbian Wyandotte, a speckled tan egg from the Silver-Laced Wyandotte, a large darker brown egg from the Rhode Island Red, and a green egg from the Easter Egger. By having this flock, I've learned what my favorite breed is (the Wyandotte!), and in the future I would get more of that breed. I still enjoy those other two birds, however, as they make my flock more beautiful and varied.
Where are some of the best places to buy chicks around here?
I'm not sure, as I don't live in Washington. You may want to ask in the Washington state thread where people get their birds or what hatcheries they would recommend:
Washingtonians Come Together! Washington Peeps