Watched it last night.
I guess having enough folks to keep watch is good, the bad part is you dont starve alone, in this day and age ther arnt as many horses as ther were in them day's so youd have to eat somthing else, cacheing food and ammo and weapons away from where you live is good Idea, the bad guy's come rolling in and Bam! ya gotta leave with the shirt on yer back!
The root cellar and excavated barn cellar were good ideas, problem is today nobody stacks hay like that any more or has plank floors or diryt floors, they use cement and plywood and use Big round bales, them days the land was sparesly populated in ther rugged area, they knew the lay of the land because theyd been on the lam before a couple advantages most folks dont have today.
Made for a good movie, the use of infa red monitors and helocopters complicates things, the ability to hide from survalance would be harder as that many people would beat a obviouse plane path through any area.