If there is a "hands house", rent that with the understanding that the tenant is to watch out for the main house as well. It is watched, but open if you need it. And you can charge premium for the rent, so the property taxes will be largely covered. The only trick is the screening of the tenants.
Got an old friend still in the home town that you can trust? To me, the first parameter, even before routes and water, for a bug out destination is "are you expected there?"
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-IronRaven
When a man dare not speak without malice for fear of giving insult, that is when truth starts to die. Truth is the truest freedom.