Narvin, in order:
Barley...I have acreage in an undisclosed location.
No propane...a natural gas well on site and worse case I'd use wood. I have plenty of it.
Water, from a spring just like Abita
Cooling...root cellar, nice and cool in the hottest of days.
Battle...no problem. I load my own ammo too.
Urban living would be tough though...