.....50 gallon will only last a few days.
I have a 5500 watt generator I have used in the case of power outages. The detachable 6 gallon tank will provide a day's power. I don't have the load center configured for the generator. I use extension cords to power fridges, a freezer, TV's, computers, and lights. Typically, power outages happen in the Summer so may also use some fans for comfort. The last "outage" we had snapped the TV cable off the poles so I moved into my trailer for a couple of nights to watch broadcast TV. It was just like camping, lol.
Trying to store a lot of gasoline in balmy FL may have some obstacles. In some municipalities there are probably restrictions as to how much you can have on your property re: Fire Marshall's concerns. In FL, an owner would have to use some fuel stabilizer or suffer the wrath of old fuel.
Propane or diesel would be a better storage solution for fuel.
One thing I noticed after running an open frame generator for days is that the constant noise is a drag. There is no better feeling than, when power is restored, to turn that beast off and enjoy the peace and quiet again.
In some areas it may be possible to go "outlaw" and devise an alternative power plan. I imagine this would be a large bank of batteries, an inverter, and surreptitious solar module deployment. I'm not advocating anyone break any laws but emergency conditions may mean emergency measures.