One last thing.
Check out YouTube videos on different ways to set up a tarp.
Tarps can cost as little as you want to pay. That will give you an idea of whether or not you want to go with a higher cost and higher risk floorless tent for the weight savings.
The lower risk during the more predictable warm weather and experience with site selection should help you decide if it's for you or not.
I just noticed that you are in S Florida. I'm guessing that you want something with "doors" to keep skeeters out. Maybe someone can sew a section of no see-um netting on the length ends for ventilation. Against the ground will restrict air flow, so that's my thoughts for consideration.
