Anyone have any thoughts on carrying MREs as food on the trail? Each one is 1200-1400 calories and weigh 2 lbs. In the Marines we only ate 2 a day because of the calorie count. Carrying six days of food would be 24 pounds, plus snacks. Any thoughts on this? They aren't cheap, about $80 for 12 meals, so I am wondering thoughts on weight and cost, or what is an alternative for food?