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. . .I do have a place 50 miles NW of Houston where it could be staged too. . .

If you have a place you can stage a trailer, why not stage a steel container like those that arrive at the Port of Houston. Buy one and put it on a concrete pad -- mine is 20'x8'. Once you have all your securely stuff cached there, all you need is to get there. Your family will know to just go there, no need to meet up first, just go. You can probably get there on a bicycle.