Hi everyone! I'm brand new to chickens. I recently realized that chicken math is a thing!! I had finally decided to pull the trigger so to speak and order my chicks (from MPC). With all of the breed choices, I decided on the ones that were right for me unfortunately a few of the ones I had my heart set on, were not available in the same ship date. The dates were consecutive weeks in May, so half would come one week, the others the following week. Is this a mistake? I have 10 chicks ordered. Also, as they grow, how big of a brooding 'area/pen' would I need for 10 chickens? I look forward to your input !!