I probably shouldn't even comment here as I have never shipped chicks but it makes me nervous just thinking about it! Couldn't you just ship the eggs?? I do know a breeder close to me and he will not ship chicks, only eggs. He said too many things can go wrong.
And, just for your information, I ordered 25 chicks from McMurray the middle of Oct. and only 3 came out of the trip alive. They apparently got cold somewhere along the way. It was heartbreaking.