Nothing is easier to take care than BlueGrass in Pa. Cold Hardness Zone 5. But South florida is Cold Hardiness Zone 10 not 5 and St Augustine is nothing like Bluegrass.
I strongly suggest you hire a professional Lawn Care Company. I believe it will cost you less in the long run.
You can lead a Donkey to water but you can't make the Jackass Drink
"As Americans you have the right to be stupid." John Kerry
"Life is tough, but it's tougher when you're stupid.” John Wayne.