The only thing I do differently is that I use a Maxpedition bottle holder; that way I can have a 40oz bottle full of water, a pot and all of the survival stuff in the pouch. Plus, I use the MOLLE to attach the knife to the side of it.
I really like a set-up like this. It's easy to start creeping up in size and weight, but I really like the idea of having a bag to carry the kit in. It gives you somewhere to put the contents when you use the bottle. If you're carrying it on an ATV/Boat or something, weight is less of an issue, and adding a couple more items gives you a few more options. Carrying something for shelter is hugely important in these parts, for instance.