IMO, if this is your first brooding experience, the month definitely matters. And your location matters a great deal. What is your general location? Place your order in January, and choose your ship date. Under the best of circumstances, shipping is hard on chicks. Add a winter storm, a cold snap, a package sitting too long on a loading dock somewhere, rough handling, and you receive a box of DOA's instead of a box of peeps.
ETA: MY bad, you did give your location! sorry!
ETA: MY bad, you did give your location! sorry!