>>2745123A go bag, 72-hour bag, bug out bag is just a bag to move from point A to point B, it's supposed to sustained you for three days (Longer with skill / knowledge), so unless you're trying to fuck off to the woods to live, you're going to want to make like an INCH bag (I'm Never Coming Home) for that.
Ditch the take down and 500 rounds.
Standalone tarp, sure the poncho can act as a tarp, but if you got it set up and have to work out in the rain, your poncho is now being used, so add a small standalone tarp.
Make a ridge line with anchor points already mad, have the end tie offs already on your tarp or poncho.
Food is really not an issue because you can go several weeks without food, it sucks, but it's doable, if anything throw in a small ass jar of peanut butter and some jerky sticks.
Get rid of the silver, you won't need it.
Toss in some crocs or river shoes, something to use if you need to cross some water and don't want to take the chance of fucking your feet up or getting your current shoes wet, also you can wear around camp if your actual shoes need to dry.
Map/compass of current area, where you're going, surrounding areas. City maps are beneficial too.
Important documents on USB drive, or laminated for insurance, fapping, personal, whatever reason.
Very small portable radio so you can listen to events, because as previous disasters have happened, phones go down, internet too at times is shotty, also won't drain phone battery.
Replace Mylar blanket with a Mylar tarp, more heavy duty, doesn't rip, can be used as a tarp, it doesn't make fucking NOISY AS SHIT noises when you use it, it being thicker helps retain heat more.
If you want to shed off some weight, get a sawyer filter and smart water bottles, the filter can connect to those bottles and take care of your needs, try to run the water through some sort of cloth filter to it doesn't clog the filter, toss in a metal nesting cup if you want to boil water. Aso some water purification tablets.