I'm assuming these birds are from SQ stock since they came from Sandhills Preservation. Is this correct? Keep in mind that you may be selling yourself short by culling at this age. You really won't know what you have until they are about a year old and get their 1yr. plumage. You will also know by then how they have grown and filled out. I don't know much about this particular breed, but it looks like #3 has the most potential to be the nicest bird. He just needs more time to grow and fill out. You never know, especially at this age. Give them more time if you can. I have 22 Heritage RIR's roos that I will be raising for a minimum of a year to pick the best 6 of the flock for breeding. I know feed is expensive but I would hate to cull now and end up feeding inferior birds not fit for the breeding pen. IMHO