[lkm]

This is how major infrastructure development gets done, it's what the world bank is for.

[NoMoreLies]

Overseeing design and all that? Easy: same way everyone else does it; get the person who's best qualified.

Attracting Investment? Who would want to pay money to help build it if they aren't going to get to live in it? What we need is a multibillionaire (a megamultimillionaire might be enough) with vision.

The World Bank? Would they be willing to loan cash? I mean, you're talking Billions here. The organization would probably be getting about 10 million a year? Where's the security?

[lkm]

Hypothetically, I would say;
STEP 1 Grow the community, engage in vigourous intellectual debate to generate a consencious around a robust, clearly thought out, logically consistent feasable CS plan or manifesto.
STEP 2 Form a corporation to develop the key enabling technologies and methodolies identified by the CS plan as well as identify the key technological partners for the future and attract financing to the idea until such time as the appropriate TRL is reached.
STEP 3 Identify the key geographic requirements as set out in the CS plan and then produce a short list identifying all eligable sites worldwide and begin eplorative negotiations with the respective governments regarding land prices, sovereignty and govermental investment, to identify the best alround deal. Launch a full scale multibillion dollar funding round to secure investment from the IMF, the world bank, etc.
STEP 4 Build it.
STEP 5 They will come.

[lkm]

But remember your paying for that stability in the land prices. You might just get a better deal if you consider something with a bit more history.

[Locksley]

Australia is the best location. I just can't think of anywhere else in the world that would be more ideal. The area is somewhat isolated, very stable, and not stained by previous politics.

Although perhaps somewhere in South America could be utilized instead?