Remembering and translating the meaning of plasters and heliographs is always fun in the morning ;O) You seem pretty well covered. Your cotton balls for tinder, are they impregnated with a petroleum product? This will vastly increase their efficiency. 12 water purification tablets could, and should be increased in quantity. Tea and stock cubes are more for comfort than real need. The cubes are mostly salt, but can mask the flavor of unfamiliar foods. You may want to add a small billy pot to cook in. Your assembly of matches and lighters is adequate, but even in quantity a finite and degradeable item. I would add a metal match to create sparks with your knife. Nylon cord is easily carried, so why not increase that quantity too. What are ear buds? Mylar space blankets are easily transported, but I worry about potential lightening strikes. People have been struck using these for shelter. What is the incidence of electrical storms there? I saw no wire listed for snares or utility use or any small saw in your list.