Breed type is important. Choose breeds developed in warmer climates so they do better in that region. Leghorns and Minorcas are a good choice (and Leghorns lay more than any other breed).
Also be mindful of breed temperaments. Hybrid/production layers usually have Rhode Island Red in them and tend to be much more aggressive than the docile heritage breeds. Mixing the two can lead to bullying. This is the best resource by far for learning about breed temperaments and how they get along with other birds because each breed has input from lots of different owners: https://www.backyardchickens.com/reviews/