Think like a back packer!!! I still have ample room in my cabinets for more stuff and I have a pop up!!
I always pack more food/water than I need. You never know what may come up. Last month I lost my dog for 3 hours out in the middle of nowhere. As I was searching I was calculating in my head how many weeks I could stay rationing my food. I wasn't going home without her!!!
BTW, a 5TH of whiskey weighs much less and takes less room than a rack of beer!!! :B