I would call the manager of those stores and ask what they are planning on doing this year. IME they change from year to year as customer preferences change and their source.
Calling now, you could actually influence what they purchase or they may be able to add a few of your choice to the order.
I live in Bismarck and the store here does not know whats coming till they days before they get them... its just whats available at the time they say..I have 30 ordered from purley poultry and then when tsc gets theres I will get some more...jeff
If you ask the clerk at the store s/he should be able to give you the name of their supplier. That is what we did and found that we had Golden Comets. Nice girls; good layers.