I've already given this a lot of thought and discussed it with plent of my friends and our plan would be to head over to Makro (A big bulk selling store) and barracde ourselves in there for the forseeable future with all that stock we're sorted for food and any tools or gadgets we will need to hunting and building a comfortable shelter will all be tehre so no need search for resources. 

We can insulate ourselves and have safe rooms against any breaches and have look out towers. Once things start to settle down we can venture outside once in a while to look for things we may want. I think it would last about a year, if eveyrhitng hasnt come back to normal by then people would start to get loopy and well thats another story to deal with