I am skeptical that such an endeavor could take place in the time frame that they propose, but admittedly, I am not an astronomer or an aeronautical engineer, nor do I keep up with space flight news. However, what I find interesting about their proposal is their way of funding the mission - get the masses and the entertainment business involved. Why not? If you ask people to fund NASA, you'll get nothing but protests and endless debate. Ask the same people to fund a reality show that takes place in space, or on another planet, and all of a sudden purses and wallets start to open.
I'm only half-kidding.