I'll tell you to get a bigger pack than 5000 for a backpack hunt. I like my 6500 cube pack for a weekend or week in the back country. I can never get everything packed back into it as nice and neat the second, third or tenth time. Extra space is nice, IMO.
Other than that, the lists that you find on the sheep forum for gear are what you want.
Must have, for me, though is a big baggie of chocolate covered coffee beans. Not only a good energy boost, they are a nice little treat.
Jeremy