Pal, it is evident that you are interested in being a survivor. I would suggest that you do a hazard analysis together with what the likelyhood is for each hazard to occur. Make plans for what is most likely to happen, and don't discount street crime. Its a real hazard, and is more likely to occur than a hurricane.

Don't waste time and resources pre-positioning gear and other supplies at locations away from home. You will probably not be able to get to them anyway. If a significant event occurs while you're still in the city, then you are most likely screwed! You'll be at one location, your wife at another, and your children at yet another in a sea of paniced humanity, all of whom are trying despertly to get out to......somewhere.

The best way to ensure your survival is to get out of the city (and Brooklyn) BEFORE a catastropic event happens. Good luck.