Some things to remember in a SHTF Bag

I have worked on SHTF Bags for my family members: me, wife, son and daughter, and for the most part they have identical contents except my bag carries more and has a .22 and extra .22 rounds.

Then I realized two things:

• My daughter (21) needs female sanitary pads and tampons (I will let her add those to her bag!)
• My wife is gluten free, so I need to add a different set of high-calories food sources.

Anyone have recommendations for the latter that has a long shelf life and is relatively lightweight? I have some of these https://www.amazon.com/dp/B00TUD6G1U?th=1 for the moment.