of the breeds you listed I would go with the staffie or pit bull, because of the climate. sure a lot of people have akitas and such in miami but a lot of people do a lot of things they shouldnt. would be fine as an inside pet, but walks and outside playtim would be pretty short with a think coated dog. what about rottweiler, beauceron, dogo argentino, boxer, canaan dog, cane corso, rhodesian ridgeback, or another gsd?