Welcome Dennis, from another relatively new guy.

For your home of a designated bugout location, you can store up as much as you feel you need. But a BOB/SHTF bag has to be light enough for you not to want to leave it at home.

I only carry 4 20-ounce bottles of water in my bag, but I also carry a 32-ounce Nalgene bottle and 200 water purification tablets (plus some coffee filters and means to boil water also).

I carry 9 400 calorie emergency food bars (in one 3600 calorie package), 3 MRE entrees, and 8 granola bars in there right now. I'm thinking of adding a few more MRE entrees as I found a few more at MREDepot that sound pretty tasty.

I put a few more things in my bag than I probably need. For instance, I have a Thermolite II emergency bivvy as well as 3 space blankets, I have a tarp as well as 2 contractor bags, I have 50' of white paracord and 50' of Olive Drab paracord. I have 1 lighter, 1 match safe of waterproof matches, and a magnesium fir starter. I have 2 compasses, one of which is just a tiny zipper pull one. I have 2 flashlights, again 1 is just a Rayovac penlight.

I'd rather err on the side of having something and not needing it than vice versa. In my line of work, I'd rather have 10 feet too much wire than be 2 inches too short. There's no such thing as a "wire stretcher" to my knowledge, lol.