white bantam

We are new at FFA show chickens this year. We have some quality Rhode Island Reds, Black Jersey Giants and White Rocks this year. I hate to mess them up by not feeding them correctly! Could you advise/direct me on the brand of feed I should buy or % of protein I need to use. I see some are...

And now for a 2nd chick from the assorted bantam bin. I realize, that at 2 weeks, it is too early to know for sure which breed of bantam she is. So, instead I'm asking what are the different possibilities. *She stands like any standard chick. *Clean, yellow legs. *Mostly yellow/white. Though...