This project has invoked a lot of very interesting dialogue and discussion -
Very fun fit for HN.
Someone mentioned Kim Stanley Robinson's book: Aurora. (There is an audiobook version.)
I recommend it also... It is a bit long winded but presents a lot of detail and thinking on many of the ideas discussed in this comment section. A very fun read. A grand adventure similar to old school science fiction books.
One of the brilliant concluding quotes, went something like;
The earth is an interstellar spaceship too.
