Oxygen absorbers are good for sure. I find vacuum less expensive in jars, but I use them in mylar bags.
There's a hand held vacuum pump used in automotive to bleed brakes that is relatively inexpensive. But I had these pumps for refrigeration work.
ANY stored food will be worth it's weight in gold soon, so you are on the right track! It's always good to see someone seriously prepping.
👍💗💙🤠🙏😁🐝🌿🥦😆