Sounds like a good experience, I would prefer to have a source of fire on me but that is just a preference.

As for which bottle, I prefer the Klean Kanteen Wide mouth 40oz for hitting the woods. Before they came out with the widemouth version I was using the original size mouth but the wide is much more convenient. Check out this blog entry on them: http://austereprovisions.blogspot.com/2010/01/aqua-est-vita.html

As for the knife, I carry my sebenza everywhere but if I had the option for a survival knife I would go fixed blade and I really like the Chris Reeve one piece series of knives but they have been discontinued. For the money I have loved my Cold Steel SRK, I would have no problem digging in the dirt with any of those.

Great knives.

Have fun,
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For the purposes of full disclosure, I am the owner of Austere Provisions Company www.austereprovisions.com .