Determine first what problems have historically been found in the orchard and the area so you know what to expect. That said prevention is key to the plan. You need strong plants to limit problems as a start. Blossom time in Florida is past and fruits are now growing. Backing up though, keep as clean an orchard as possible removing all plant debris to minimize carrying pests and disease from one season to the next and either burn it or haul it as far as possible. Mulch or groundcover.
If you have fungal problems you can try sulfur in liquid soap availavle locally and is organic. That can also be mixed with seaweed extract and will improve it's fungal abilities. Wait 4 days then before applying any other product to limit conflicts. There are also commercial organic "live" beneficial microorganisms available to cultivate the plant surfaces, the thought being that the populations of those will squeeze out the bad micros just by being there.
Water early when plants are wet and/ or use drip irrigation. If the plant is wet wet wet all the time your begging for fungus. Keep all your tools clean. A surgeon would not cut you with a disease carrying scalpul, same with plants.
Do you have beetles eating blossoms and new growth? You want to encourage birds and bats by setting out bird and bat houses, esp. bats in this case as the beetles like the early evening. Look for pheromone traps and products, try Gardens Alive Company.
Use oil in winter and again in March to control scale and the mold problems from them, with the above fungicide if needed. It is summer oil or superior oil and there are organic ones out there.
If you have thrips or red spider you may have to resort to botanicals and can try pyrethrum, but use it at dusk to avoid harming bees and beneficials. If the problem gets that bad call the county agricultural extention service. You should be on a first name basis with them. And look up Gardens alive products for all the new stuff. Be prepared with knowlege before the problem on a time line. Have fun.