Even without electricity, my family would have a good chance of being fine for an extended period. I hope all other decent people will prepare similarly. In a post-SHTF world, I’d like to see good people outnumber the parasites again, and during any turmoil, I’d like to see looters and predators have such a rough experience that they don’t have time to learn.
https://providentliving.lds.org/self-reliance/home-storage-centers?lang=eng
The Mormon Church offers long shelf-life (20-30 years) food for storage, and the prices are comparable to or better than what we find in the store. Note: I like freeze-dried and dehydrated for camping, but why pay extra if you are not going to carry it in a backpack?
https://www.lehmans.com/product/lehmans-own-galvanized-well-bucket/
Similarly, I would hope that people would put $80 or so into a well bucket that fits through their well at home in the absence of electricity, if not a real manual pump. The bucket is still a lot of work (depending on the depth of your well), but at least you don’t have to carry heavy and questionably sanitary water a long distance.
First aid and sanitation supplies are also essential, and I’d put hand tools on the list too. I have no advice on prescription medications except to figure out your options, if any.
And, of course, Ruger, Remington, and Armalite offer other products that would be helpful in a grid-down situation.
I think we'd make it, but gets awful damn hot down in Houston in the summer. lol