Hello all! We have 8 almost 6(ish) week old chicks. 4 are fully feathered, 2 are almost there, and 2 more have to fill out on their chest more. They’re different breeds. Should I wait to coop them all at the same time or go ahead and put the big girls in the coop now to begin coop training? They would certainly enjoy the extra room.... thanks in advance, let me know if you have any guidance!