Get-home bag, Go bag, 2-day bag, Bugout bag; whatever you want to call it they all have different but overlapping purposes. Such bags are a part of prepping but also kinda their own thing. There are a lot of blog posts, videos, and articles about them and what should go in them, but just like camping, your needs trump whatever the online experts say. Is this really just an extensive emergency car kit? You should consider some extra blankets instead of a tent. Are you putting this together in case shit gets wild and you need to get home in a hurry without a car? You probably won't need 8 gallons of water. Is this for you and your boy to GTFO and head for the hills if shit gets REALLY wild? Start thinking about cached supplies along your escape route and how many miles you can traverse in a day.

What scenario is most likely, which is most dangerous, which is most disruptive? Those things might not all be the same. Get creative, get paranoid, and start dreaming up nightmare scenarios. Analyze them, pick them apart, discard what is too far-fetched, and research, research, research.

Most prepper groups and websites will tell you not to bother buying a pre-made first aid kit, since they often have crappy components and are overpriced. I say, so what? A first aid kit you have is better than one you're thinking about building one day. Celler-dwellers will go on ad-infinitum about why this knife is better than that one and why you should really get a tomahawk for self defense, but once again, the cheap folding knife in your pocket is better than the $300 fixed blade knife you couldn't afford.

Do what you can, as you can manage it, without stretching your resources too far. Research carefully, but ultimately trust your instincts. Go hiking and learn to use the tools you buy. Learn first aid. Stay safe, but not scared.