I'm not certain of your occupational background, but if I'd have to guess it's mil/law.
And you are applying your operational experience to you new scenario. Recognize that in this new position you don't have that logistical support you could count on previously.
Now to my point, with your current set up what is your operational distance/time? (D/T) Previously you'd supply, head out, operate and return. With a "prepper" scenario that is not guarenteed. At which point the attenuation of your capabilities will be more deadly then bullets.
When I put my kit together* I recognized that having arbitrary quantities of supplies like food, water, batteries was just careless guesswork and that I would need to maintain all of them for as long as possible and have a means to resupply them without undue increase in risk.
I can relate to your kit and the idea behind it (sound a bit weird), because you've layered it almost the same way I have mine. EDC, Belt, PC, Pack. The only thing i'm not seeing is if you've considered your D/T with layers removed.
My EDC layer gives me a maximum of 2 days of E&E with out resupply before shadows start looking like bad guys. (I'm working on a bail out kit and would welcome some ideas)
My EDC + Belt gives me 3 days of operational reconnaissance capacity + the ability to resupply bare essentials.
My LBV allows communications & engagement possibility.
My EDC + Belt + Pack gives me 8 days with the ability to resupply food, water, power indefinitely.
* Yes I don't have it posted here it just always seems unfinished to me. I'll make an effort to post it.