+1 to isayNUNYA for the comment on using a Back Packer's pack versus a hunting pack. Camo is always a great OPTION but it isnt always necessary and sometimes limits choices and can cost significantly more.
Good Example: Badlands Sacrifice. Everyone (including me) wants this pack, but it is hard to come by and isn't really considered a "Load Hauler" but will do in a pinch. It has the Hypervent which is a bonus and is Super Light. A great alternative and almost exactly the same except for camo, is the Osprey Atmos 65. It has the HyperVent style vents, similar capacity, comes in a near camo green, BUT is about $70 - $100 dollars cheaper if you know how to do a good GOOGLE SEARCH. Another that is really similar (though has a slightly different HyperVent Style) is the Gregory Z65. Similar Green colors and if you get a 2009 model versus a 2010 model, you can get it for about $140-$160 with GOOGLE search. Both are also approximately the same weight as the Sacrifice and VERY COMFORTABLE.
Either of these alternatives will keep you cool, have the space needed for a few days AND haul 50# comfortable (relatively anyways). When added to a pack frame such as the OX or for even less money and a good reputation to match, is the Cabela's Alaskan Expedition or Extreme frames; you can be an efficient Bivy and Hauling Machine!! Just leave the frame at base camp or truck for second haul if you don't want to hunt with it.
The only issue with either of these alternate packs, is the Warranties may not be the same as the Unconditional Lifetime Warranty of the Badlands (I haven't checked those yet), but do yourself a favor and check out some reviews such as the "2010 Pack Reviews" (found in a 5 part series) through a GOOGLE Search or on Bowsite dot com. Excellent Reviews done by ELKARCHER that will give you allot of things to think about and allot of options other than badlands etc. (though I LOVE BADLANDS!)
?-ERock-> ?