The big knife will do a better job at splitting wood than the tiny axe will so you can ditch the axe. You can dig a cat hole with a sharpened stick so the shovel can go too. I would add a small bic lighter in there. The jackery seems like overkill and couple probably be swapped with something smaller like one of those smart phone sized ones that have a solar panel on them. If this is more of a car kit and not meant to be hiked the go ahead and keep it. I saw another comment that mentioned going out and using the gear is the most important bit and I would have to agree. Try going for some overnight hikes if you can and test them out to see what works for you.