elevation 500 feet or higher
maximum 1 hour drive from the sea (if only 500ft drops into the sea)
maximum 2,5 hours drive from a major airport
ability to grow things like avocado's (so only light frosts up to sporadic 15°F)
There is only one place on the US East Coast that fits your criteria.
Florida
With a greenhouse, you might get Avocados to ripen in some of the other states near Florida though I have no experience growing an avocado indoors..
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