Read this again - it's got just about everything you need. Only thing I would add is a Greens supplement like Greens+. Since you can't get fresh veggies, this is your next best thing. Add it to all of your protein shakes. Tuna is also good as it comes in special packets now. Stay away from all that grain based mixes. It won't be terrible as you'll be walking a lot, but there are better things out there. I know on my previous trips there was some hard bread stuff - don't eat it!