It sounds like you have a bit of a learning curve maybee you could start slow with weekend camping trips practicing wilerness living the kids love that sort of stuff or getting away for a few weeks at a time.Im not sure if you have the resources to get yourself a piece of dirt to start building a weekender but that may be an option.
maybee you can find a well established community that you could spend some time with on occasion.
I dont think you should take the kids for more than a weekend before you at least have your priorities met
your survival priorities
your human needs
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