I like the above kit with a few modifications.
1. Magnesium starters can turn dangerous when they get wet. They tend to break off and get on your skin - burning all the way through. There is another type (non-magnesium) that can be soaked for hours and will strike when soaking wet.
2. If you aren't going to be in an area with fish - delete the fishing kit. Replace it with a quarter pound of jerky (not the spicy stuff because that will make you thirsty).
3. If your multi-tool has a knife, the other one becomes redundent.
4. You should have some extra dry clothing - especially socks and thermal underwear.
5. Several energy bars.