I ordered my brahma's from McMurray, and they called me the week before they shipped them. The day they shipped I received an email saying that the chicks had been shipped. The next morning the PO called me and said the chicks were there. I ordered 25 chicks, and 1 mystery chick = 26, they're almost 2 weeks old now, and besides some major pasty butts from shipping the first week, they've been great, no losses and all are doing great!
Best of wishes to you and your new chicks! I know how exciting it is waiting for them to arrive. My bf swore I was going to drive him insane during the wait.