Welcome to BYC and to the Arizona thread! Omg I’m excited for you! I honestly hope you like the area and have fun with your new babies! Just remember that Tucson still has a ton of wildlife! Coyotes and a lot of other wildlife run through the city even though people try to play it off like they don’t tsk tsk!! Which means once you build your coop make sure it has a lid and predator deterrents and just to play it safe scorpion deterrents. While your babies are little you don’t want them playing other those nasty buggers.
If you go for feed store babies, look at their tags for information on the breed. Or I have a hatchery booklet that Cal Ranch gave me which has information on the poultry they sell and should have suggestions for heat and cold hardy birds

. I can look at it thoroughly and post pics to the thread for you or type it out!