Thanks for a really interesting scenario of what a moon base might look like, if the US government spent 2% of what they spend on the defence budget it could become a reality.  I am too old to qualify as a colonist but if I was 30 years  younger, I would jump at the opportunity.  Hopefully I will see the first moves in this direction in my life time, I watch Neil Armstrong set foot on the moon, a great moment,, and then of course there's Mars....