If you don't need meat with every meal, you might look at the Lipton/Knorr rice and noodle side dishes - they're really inexpensive, and taste pretty good. They take longer to prepare, so you might need to factor in more fuel. If I remember right, you'll have a Svea stove - since it simmers pretty well, it will be a good choice for these meals.

You can buy foil-pack chicken (tuna, and other meat) to add to them, but depending on the cost of these extras, you soon are back up to the cost of freeze-dried, and carrying more weight.

The best freeze-dried I've found so far are the Enertia brand (some of their offerings are also sold under the Coleman brand.)

Have a great trip.