Personally... at the very least keep the MRE entrees. I have case of MRE's in my supplies, but on my BOB is the dehydrated camp food. Anyway, my point is that you'll probably want a little variety if you're living out of a bag.

And speaking of variety, have you ever lived off water for 7 days only? If not, it can get dull. I'd toss in a couple packets of Gatorade or Kool-aid or Propel or coffee or.... you get the point. More a comfort item than survival, but light enough.

Finally, I'd personally suggest either the 2400 bars or lower, if they have them. Last thing you want is the 3600 to get a tear in the corner, and find out at an inopportune time that 3 days worth of food has rotted.