Hi,
Just my two cents...
The idea of building the kit around a pot is great. I suggest a "corn boiler" type, though. These can be found at a number of reenacting sutlers. They can be expensive, so shop around.
I agree with MostlyHarmless regarding the Vaseline jar. Use that space for high calorie food, as your body requires extra calories as furnace fuel.
If the cigars are a psych-support item, or a nicotine addiction supplement then keep them. Otherwise discard as nicotine is a vaso-constrictor and will hinder your efforts at keeping warm.
Warm, dry & hydrated are the priorities of winter preparedness, but everyone here knows that.