Selco, Here in Miami, Florida many have hurricane proof windows which I have, they are strong. I am going to buy the hurricane steel shutters to add to them since now they are cheap since everyone is using the hurricane proof windows.
In an SHTF the hurricane shutters will not be easy to take down.
I like the idea of having one door in the front with steel bars with two locks and one in the back too so if you do get run down by a big group you have a way out though the back. I do plan to reinforce the two steel bar doors.