I will join the chorus and recommend against MREs, primarily because they are heavy. I have consumed some while on fire lines and rescue operations. They are OK, but you can do just as well at a decent supermarket.

Most markets have energy bars (Clif bars and similar). Try some and see how you like them. Stock the ones you like for emergencies. There are many more brands coming onto the market. A good many of them are simply glorified candy bars, about equivalent to a Snickers bar (which is actually not all that bad nutritionally). With Clif bars at least, don't worry about expiration dates - they last well beyond the time on their wrappers. Their big advantage is - no cooking or preparation required, other than tearing open the package. Supplement them with canned goods that are reasonably nutritious and that you like -perhaps beef jerky?

The big item is water. Keep you canteens and containers filled and ready to use. I don't bother with bottled water. Basically, it just an added expense. One way or another, you will need at least a gallon a day, especially in warm weather. This is where canned goods shine. Most fruit and veggie goods are predominantly water - don't waste a drop.

Gather clothing that will work for your weather and climate. This means you will most likely have to adjust the items on a seasonal basis, but that is OK - it gives you a chance to review all the contents of your bag.

I imagine you will have meds or appliances relevant to your disability. They, obviously, are high on your list.

I share your concern about EQs, being also from SoCal. There are many simple measures, not at all costly, that you can take. Take down anything handing on the wall over your bed and other items that will fall over and cause injuries - bookcases are big culprits here. Definitely no mirrors on the ceiling....

A lot of us are willing to be helpful, and more specific details will help. Develop a plan for anticipated situations and get ready as best you can. None of us are anywhere near perfect, and nature rarely follows the script, so improvisation will almost certainly be necessary.