I am expecting my first shipment of baby chicks in on 9/2 and I am sooo nervous!!!! I have their water/feeder and brooder already with the heat lamp... I just dont know what to feed them!!! I know they need the chick (grower/starter) crumbles- but what brand is best? My chicks are being vaccinated so do they need the medicated food?? I have so many questions- but I will start off slow!!!