So I'm impatiently awaiting my first (ever..new to chickens)order of day old chicks later this month. 12 assorted. .cochins, bielefelders, Orpingtons, brahmas, Faverolles..all sexed pullets. I couldn't pick just a couple. They look so beautiful. We're working on the coop and have all the brooder items. I picked up a 5lb bag of chick starter, but I'd rather order a big bulk bag. I know the bielefelders will eat double, so I'm wondering if a 25 lb bag would be enough to get them thru the first 4-6 weeks before I have to switch them over? Or would 25 lbs be excessive?