We have about 8 hens currently (buff, RIR, BR, Sex link etc.) and I am looking at getting about 20 chicks for around $1-3 each. I have a separate coop for the chicks but am knew to the whole raising chicks thing. Just have a few questions. - I dont have an incubator so I will be buying already hatched chicks, how do I know how old of chicks to purchase? - Is it better to get all of the same breed (all RIR) or does it matter? - What kind of shots or meds. Do they need and at what age? - I know to feed them mash, do they need grit? - Is it better to order them from a hatchery or a person? - I will put a heat lamp in there but when are they old enough to not need a heat lamp/leave the coop. Thanks so much for all the help.