I am currently planning a 2008 hike and am curious to know If a 3,200 cu. in. bag is big enough for a thru-hike. I realize that there is many things that we help your decision like how far I am going between maildrops and all that. I am currently planning to try not to carry more than 4 days of food at any given time. Of course this will surely change with my planning, there is alot of time between now and March, 2008. Any advice would be GREATLY appreciated!! Thanks ShawnR80