You've had a lot of good feedback on your question, but I thought I'd give my perspective as I did things a bit differently and actually enjoyed how it worked out.
First, I agree, look at why you want to raise chicks. With the acreage and size of coop, it sounds like you have plenty of space...
@EggSighted4Life
Look into Buckeyes. They come to table around 16 to 18 weeks if you push them with meat bird 22%. (The breed is stated to come to 5lb by 18 to 20 weeks latest...some claim 6lb by 16 weeks, but that is with special lines and good care).
I had to butcher mine early due to...