You might want to check your local laws about how much you can legally store.

I have been a boater for years, and boaters tend to let their vessels sit for long periods of time without use. Fuel degradation is a problem. After trying several methods over the years, I have found two products that are effective at treating fuel.

Neither are cheap.

Both are available at marine supply stores.

Pri-G

SeaFoam

I have used fuel that I have stored at home, in sealed metal containers, that were treated with Pri-G, three years after pumping. It had not degraded. Pri-G can also restore stored fuel that has not been treated (at least that's what I've heard.)

I have used SeaFoam only in boats (not in my home storage fuel), but did have fuel treated with it in storage for nearly two years, and the vessel ran fine. SeaFoam also cleans the carb, and has a multitude of other uses, too.