U_Stormcrow
Crossing the Road
Please don't forget about ventilation. A prefab coop needs a lot of modification to be ventilated sufficiently for our climate. I'm in Ocala so not too far from you. Our coops are quite open (Hw Cloth) and they need it desperately come summer. Chickens in general have a lot more trouble with heat than cold.
As for breeds to start off with... make sure you are thinking about what eggs you will get. Mixed breed can be fun - but what mix? We were disappointed when we started with Silkies and got small eggs (lol silly us).
I responded to you in the Florida thread about older hens I have available - I do also have some 2 month olds... but whatever you pick, make sure it has traits you actually want. Do you value big eggs? Color of eggs? Docility? Feather colors? If you make a list of your priorities, we can better help you on breed(s). And there are options for sourcing like the big Dunnellon farm swap, and I know a lady who resells from big hatchery orders offering a lot of variety and sexed chicks.