Kudos to you for wanting to build before getting your chicks! So many get chicks first, then build. It's much harder and way more stressful that way. I started my build first. I started in November and was still pushing it when I got my babies in late February.
I prefer a walk in coop. I'm not old (is 52 old?), but I do have RA which makes it very hard to bend/get around at times. I would rather be able to get in the coop and interact with my chickens. It's much easier in a walk in.
Since your wanting to do deep litter, dirt floor is better, but it can be done with other flooring. Just be sure to put some kind of protection on the floor. Either vinyl or Blackjack 57. It's a roof coating you can get at Lowe's.
Use 1/2" hardware cloth for all openings. Attach it with screws & washers. Also be sure and either put an apron or else dig down and bury welded wire into the ground. Eighteen inches to 2' should be enough. This prevents predators from digging into your coop.
Make sure you have plenty of ventilation. The Southern heat will do your chickens more harm than our milder winters. My coops & runs are all hardware cloth. I put up tarps/clear plastic for wind block in the winter. They do fine.
Build you coop/run bigger than you plan, or as big as you can. Chicken math will hit. Sooner or later!
If you can, cover at least half of your run if not all of it. The summer heat during the middle of the day will make your run almost unusable. Even with shade trees, your going to have that 10-2 window when you have straight overhead sun. It will also give them room to get out in bad weather. I put tin over part of mine, hardware over the rest.
Don't worry if you don't get it perfect the first time. I had my coop for a year, and decided to redo it. I just finished stage 2 of my redo (haven't got it posted yet) and have more to do. Looking at my pen yesterday, I released I put one of my doors in the wrong place. I will be changing it in the future to make it easier for me. Live and learn, LOL.
I prefer a walk in coop. I'm not old (is 52 old?), but I do have RA which makes it very hard to bend/get around at times. I would rather be able to get in the coop and interact with my chickens. It's much easier in a walk in.
Since your wanting to do deep litter, dirt floor is better, but it can be done with other flooring. Just be sure to put some kind of protection on the floor. Either vinyl or Blackjack 57. It's a roof coating you can get at Lowe's.
Use 1/2" hardware cloth for all openings. Attach it with screws & washers. Also be sure and either put an apron or else dig down and bury welded wire into the ground. Eighteen inches to 2' should be enough. This prevents predators from digging into your coop.
Make sure you have plenty of ventilation. The Southern heat will do your chickens more harm than our milder winters. My coops & runs are all hardware cloth. I put up tarps/clear plastic for wind block in the winter. They do fine.
Build you coop/run bigger than you plan, or as big as you can. Chicken math will hit. Sooner or later!

If you can, cover at least half of your run if not all of it. The summer heat during the middle of the day will make your run almost unusable. Even with shade trees, your going to have that 10-2 window when you have straight overhead sun. It will also give them room to get out in bad weather. I put tin over part of mine, hardware over the rest.
Don't worry if you don't get it perfect the first time. I had my coop for a year, and decided to redo it. I just finished stage 2 of my redo (haven't got it posted yet) and have more to do. Looking at my pen yesterday, I released I put one of my doors in the wrong place. I will be changing it in the future to make it easier for me. Live and learn, LOL.