There are so many opinions out there on what the best food is! I need to know what the best bang for my buck is, while still feeding my girls healthy food. There is a brand at my local small town hardware store called "Pen Pals" and it is priced well. They have egg layer pellets, chicken scratch, and cracked corn. Which should I be feeding? Or a mixture of two or three? I am getting them as chicks in the next couple of weeks, when should I stop feeding chick starter and put them on regular chicken food?