I'm buying some food grade buckets. (I already have some, but am buying some more.) I'll be buying some all-purpose bleached flour, granulated sugar, and maybe some rice. Probably Western Family brand. First, will air tight food grade buckets be enough to store this stuff for a few years? Or will I need some Oxygen absorbers and moisture absorbers and stuff as well? Second, is that kind of flour good for storage? As in, will it keep long and well, or is there some form of flour I should be going for? Same question for rice too. Is there some kind of rice I should be pursuing? Does instant rice last as long as regular rice? We'll also be stocking up on some canned goods. (Tuna, chili, beans, fruits, veggies, apple sauce.) Other recommendations for DRY goods I should store? I figure flour, rice, and sugar is a good start. Some salt would be good. And some dry beans. Anything else, or would the rice, flour, and sugar be okay for dry goods?