This is just my 2 cents, and I'm not going to quibble with anyone who has anything that works for them, but.......living in Florida has it's own challenges that need to be addressed or you will be addressing them later. One is summer heat with high humidity. Any closed box is going to become a chicken cooker. Lots of ventilation is absolutely necessary. Moisture and mold can become serious problems. Second, we deal with major thunderstorms with big winds, tropical storms and hurricanes, and you will deal with one eventually. If it's badly made it's going to come apart and you will be guaranteed to be busy with other things at the time, or it won't be safe to go out and deal with it. I would recommend that you anchor whatever you end up with, with mobile home anchors or shed anchors, so you KNOW it won't move. Third, you most definitely will be found by predators at some point. Skunks, possums, rats, snakes and raccoons, to name a few, don't care if it's city or country, and they will be attracted by the chickens and the feed. I would not use chicken wire anywhere, and for nighttime security you need to go with 1/2 or smaller hardware cloth. If you don't take those things into consideration now, they may bring you grief down the road. If you can find a used garden shed for cheap or even for free, converting it would be easier and it will be sturdier. You can cut lots of holes for ventilation/windows etc. Here is one link with some pictures, you can search for much more. https://simplelivingcountrygal.com/converting-a-shed-into-a-chicken-coop/ Then you can make the run any size you want. Also look on pinterest for lots of ideas for cheap chicken coops that you can build. The hoop house idea or an A frame plan may be your cheapest option that will be sturdy enough to hold up. You can work on 'cuteness' after you have the basic structure in that provides them the right shelter and safety. My first coop was inadequate and I wasted an enormous amount of time and energy trying to make it work. I ended up rebuilding from scratch to address all the issues and it was worth the effort in the long run. Everyone has a budget, and there are some really awesome coops that have been built from almost all reclaimed, salvaged materials that cost little to nothing. Imagination and effort can compensate for budget.