Rusted out truck beds? Yeah, that's bleach.

Your plan sounds reasonable. How well it will work depends . . . on how pure the bleach is (low metals bleach lasts longer); on how cool your storage area is, and so on. But, it's a good place to start, so long as you use a K2006 to check how well it's working.

Keep in mind that -- even in Florida -- you can store bleach for a while, now. In July? Not so much, unless you keep the bleach in an AC'd place.