You will not be able to get a Show Quality bird from a hatchery. I would recommend you contacting Sunshine Silkies or Bobbi Porto. They may have some older birds for sell.
I have some blue and black juvenile birds but can't sex them just yet. I may be able to get an idea within the next month but they likely would not be ready to show until around 7-8 months of age at least and that will be October/November. I won't know if they are show quality for another couple of month, but I think there are a few possibilities.