At least my comments have gotten you to reassess your present location.

The river that you spoke of is also a natural defensive barrier. That is one entire "front" that assists you in the defense of your neighborhood. It will keep you in water and provide food. Damn it up with a spillway and you can make a waterwheel connected to a generator for limited electrical power supply.

One largely overlooked factor in most neighborhoods are all those front yards that get plenty of sunlight and could be turned into another garden space. "The Mother Earth News" ran an interesting article on that subject about 6 months ago. "Mother" is also a very good source of material to have around. I have 30 years of them in my garage library.

In my case, I'd have to trim some trees way back to reduce shaded areas but that will provide firewood as well as more productive ground.

Sometimes you have to "step outside of yourself" and look at the landscape from another POV in order to fully assess all the pros and cons of your own situation. Tunnel vision is easy to acquire and can lead to disastrous decision making.

As I said before, My plans would be implemented in stages as the need arises. Necessity is the mother of invention! There is no substitute to having good Intel. Planning for the gathering, evaluation, and use of reliable Intelligence information is crucial to making correct decisions at the appropriate times. Advance planning is where the value of having a diverse group becomes very apparent. The more diverse the group, the better chance of covering all of the bases in all of the subjects that you will be required to think and plan for.