at least you guys dont have to worry about bears down here
mmm...iodine flavored water...mmmm.... but better than getting sick!

gatorade or lemonade mix is what I used to use to help it along... but then, of course, I had iodine flavored lemonade. a little less subtle than in water, though

put the dry mixes premeasured for your container in seperate ziplock bags.
[dont forget the bug spray/suncreen/afterbite/etc... ]
i dont know that I've ever tried to bring bread backpacking with me- bagels or otherwise. i really like the food you just have to mix with water. i think i would go for tortillas or pita bread (can you buy pita bread down here?), and bring some bag tuna. or bag chicken (like the tuna). the little applesauce cups are a nice pick me up (the motts 'healthy harvest' are 100% fruit, no additives like high fructose corn syrup), and although a little bulky are pretty light. oranges/tangerines travel well and are also nice. granola bars...lots of granola bars... a small plastic jar of tuna w/ a spoon (eat out of the jar). fruit roll ups/fruit leather (there are some good 100% fruit ones around- none of that high fructose corn syrup crap in them, either).