MoBOB, that's about the size of my BOB, and I think I've got enough stuffed into mind. My lack as far as looking at the first 72-hours or so is enough water. However, carrying enough water for that period of time is near impossible. And I'm sure if you look at the things you have, right now you own stuff that can be useful in a BOB. If you are like many, you will fill it, and then change what is in it a number of times. My bag itself is going to get a 20+ mile workout this weekend, for the first time.