Hello!! i have 7 chicks all 6 weeks old they currently live in my garage in a big brooder/gaylord box and the temperature is 55f in the garage (so they are used to 55f) and the out side temperature is 30f-mid 20f so when would it be okay to move them out side because that is a big temperature drop. also i am feeding purina starter grower non medicated (they have already been introduced to the soil and so signs of Coccidiosis) is this feed okay until i switch them to the layer feed when they are 18 weeks? or is there an in between feed? Thank you all.