I was thinking mostly about your modules, and in particular your water. My only concern is that "12 pack"- sounds like a half flat. Since most bugging seems to involve water, cardboard isn't my friend. :P

My 12 pack of water is in a soft sided cooler, I buy the Figi brand at Wally World, pure spring water from Figi.

Before I read a few of those SHTF Stories on Frugal's I was considering one of those plastic types, a friend of mine carries on in his jeep. Have you ever used it, if so how does it pull/handle with a load?