Yes Mountain House is "just add boiling water". You have better quality brands in your part of the world though (pic related). Instead of the pasta, try looking for instant mashed potatoes as they generally are "just add boiling water" as well. Microwavable precooked rice is another option if they sell it in your area, but it's heavier.
Cover is the only thing you're really missing.
>>436737 mentioned a tarp which is a good way to go. If you're concerned about weight or space you should have at least an emergency bivvy with a way to keep warm.
I would recommend adding a fero rod as well as a third different method of starting a fire. Other than adding some cover, everything else you add at this point is convenience items. You just work out how much weight you're willing to carry for how much convenience. I would go with as much convenience as you can manage to carry for a 8-10hr hike.
