A survival scenario: What do you do?

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Let us consider a scenario - a survival scenario.

Starting point:

You are the proud owner (no mortgage!) of a modest 3 bedroom, 2 bath house on 32 acres of good farmland. You're right next to a stream that has good water flow and has never gone dry. In addition, you get electricity from the grid, and have sewer and water connections to a small town with a population of about 250. The area is in the temperate zone of the U.S. and has 4 seasons. The area is fertile, rural, and many of the people have small numbers of livestock. A considerable number grow hay, and many have vegetable gardens.

In addition, you are well supplied. You have an extensive number of firearms of high quality, abundant ammunition, and some (2 gen +) night vision capability. You have one automatic weapon of your choice, fully (and lawfully) registered under the NFA. You have one year of freeze-dried and MRE food for yourself and your family. You also have all medications you and your family need. Your store of gold and silver will cover any normal bills you might have. Choose other supplies at your discretion.

Crisis:

For some reason, a crisis occurs - one which causes the normal functioning of the society to cease. This means that the delivery system that supplies the stores no longer works. Government and corporate checks are no longer delivered. Hospitals and the medical system in general cease to do their work.

Katrina was a short term example of this. One Second After, a novel about an EMP attack, considers a 1 year scenario. Some peak oil theorists suggest that such breakdown might result due to declines in oil availability. But whatever the reason, the web of trade and exchange has been disrupted.

Some Challenges:

As pointed out by The Reaper:

90% of the nice Americans are about 72 hours from reverting to savages.

Take away electricity, clean water, flush toilets, comms, wheels, a full cupboard, a universally accepted currency, and stores full of things to buy and watch what happens within days.

See Katrina for examples.

TR

Your neighbors in the small community are not as wise as you and have only limited supplies. Fortunately, you've been as gray as a person can be, so they don't know about what you have. You are within 150 miles of a number of cities of 100,000 population, and 1 city that has 250,000 people. They will have reverted, and they will be hungry. Your community (and you) are close to a major highway. You should expect large numbers of people to come through your area - at first by car, and later on foot. Many of them will be armed.

The grid and infrastructure may last for some time, but as society becomes unraveled, they will be less dependable and will ultimately fail. So the freezer won't be effective after about a month. Neither will the rest of the systems we have come to depend upon.

ROE

The normal standards of law and order have been relaxed. Calls to 911 produce no help. You can defend yourself and your property without adverse consequences. More aggressive postures entail the substantial risk of future legal problems.

Question: So - what do you do to get through 2 years? (Note that you only have stored food for one year) Simply hiding probably won't work, since the other people in the area will start to wonder about you. And they will notice that you don't look as if you've lost a lot of weight. Hunting may work for a while, but others will hunt too - so game availability will decline to a low level. Farming is fine, but you don't have any seeds stored. And although this is a rural area, many of the seeds available may be hybrids that don't reproduce.

Bonus Question: A stream of hungry, desperate refugees stream by on the roads. One of them that pushes all your emotional buttons seeks your assistance. An example might be a young mother with an infant in her arms. If you help one like this, others will come. This will continue until your safe-haven is overwhelmed or you turn them away. What do you do, and when?