If you plan to order chicks, do it now. Most hatcheries are selling from hatch-dates well into summer and fall, right now. You'll want to get your littles shipped well before the worst of the heat hits. You can also consider combining an order with someone nearby to make a minimum order. Florida has an active State forum here on BYC. Maybe you can find a "Shipping Buddy," or better yet - someone with extra chicks!That’s great advice, mate. I hadn’t considered losing chicks in transit. I appreciate it.
https://www.backyardchickens.com/threads/florida-always-sunny-side-up.305793/