Welcome to Florida!
The first thing I would do is to not mow anything until you see what you have growing. Well, if your home owner’s association allows it. You may have all sorts of wonderful plants in the ground that have been mowed off or just need to be identified. I understand it’s sand and grass, but you never know. When I bought my place I let it go for the first few years and only mowed walking paths … within several years I had large hickories and mulberries that the previous owner had kept mowed down. My walking paths also changed as things sprouted and I started putting things in the ground.
Second suggestion I have is to get some plant identification
books for Florida. You will amazed at the amount of things you might already have on your property once you learn what they are. Also once you begin to recognize things you can dig them up by the side of the road. I usually find the edges of parking lots a great resource. I’ve found tons of plants behind my
local lowe’s store.
I would suggest citrus trees right away because they don’t need amended soil. I tend to plant those on the perimeter … sun permitting … because they are trees I don’t have to fuss over. I even have several planted very close to my large oaks and they are producing really well. My Walmart had citrus last week for $20 each … they weren’t as tall as the ones at lowe’s, but a third of the price. I do tend to plant lemon trees closer to my house because it's easier to just step out the back door for the one lemon i need for dinner.
In the areas where you want to plant other fruit trees, like pears or plums start adding piles of organic matter like leaves, moss, twigs … even limbs … look for bags of leaves the neighbors put out for trash pick up. You can also lay down
cardboard and then add on top of that. Once the worms find they have a source of food, and moisture, they will begin to populate those areas and help with aeration and amending without any work on your part.
A great trick to save money at the start is to buy roots and shoots from the store. I have started several gingers that way and am attempting a cassava
root right now. I'm not a fan of mint, but you can usually start that from fresh cuttings from the grocery store. Ask neighbors for cuttings or seedlings. Most people love to share their favorite plants.
The bottlebrush will be a great pollinator attractor … start mulching it and it should appreciate it.
Enjoy your forest
gardening journey.