Dear Jeff - I hate to pee on your cornflakes, but here are some inconvenient facts:
- Earth can barely support the nearly 8 billion we already have;
- Mars and the Moon have no atmosphere, and they are much smaller than Earth; and
- All the other planets are extremely inhospitable.
Have you been watching "The Wrath of Khan" again? Terraforming will be a LOT harder than what was depicted in the movie.
It's great to have dreams, but I'm too old to chase after your BS schemes.