Leaving with your life and your safety while the getting is good would be a sound course of action. One last video inventory of the stuff before leaving if there is that much time would make the insurance work easier. One can alway buy more stuff and that is what insurance is for..

In the event one is "trapped" with no way out, then it is not a good situation to be in alone. One would be wisest to create "tribal" alliances with neighbors or other trustworthy souls just as some in New Orleans did; however, per your question....

** AR-15 with banana clips for the initial altercation.
** Scoped 270 prairie dogriflefor "follow up" use after they were "beat back" anotch but still lurking about pondering "what next?". (270's are good for something)
** 12 gauge riot gun for the last hurrah in case I didn't manage to"beat'em back" and thingsend up getting up close and personal.

An armed society is a civil society.