i started my flock this weekend with only 6-8 in mind and came home with 10....so what i have figured out is that as fixed as your plan is...it will still vary. they had the breeds i wanted and couldnt pass them up. Goal was 3 Barr'd rocks, and 3 Black Ausies....came home with 3 barrd rocks, 3 black ausies, 2 americauana, and 2 silkies....even though i swore i wasnt gonna get any bantams....crazy how things change! Either way, best of luck however you decide!