I went to TSC in April and officially began keeping chickens. I got some red sex links and didn't realize how clueless I was to chicken keeping. I love my chickens which are all happy and healthy. However, I would like a sustainable flock. This coming spring I would like to begin keeping standard size, heritage breed chickens that are dual purpose. There are so many wonderful options, I am not sure which to go with. I am kind of leaning toward Orpington but I have an open mind. Which ones do you recommend?