We have ordered our first chicks. We almost have our coop ready. We will have our brooder ready this week. My question is we will go get feed monthly. Tractor Supply is more than an hour away. I think we understand that we feed chick starter for 6 weeks then chick grower till they are 20 weeks. We are getting 11 BLACK AUSTRALORP Females, 2 BLACK AUSTRALORP Males , 11 SILVER LACED WYANDOTTE Females , 2 SILVER LACED WYANDOTTE Males , and 1 Free Rare Exotic Chick. They will be here the week of April 5th. So how much chick starter will last them about a month??