I'm not going to waste time on nasty remarks about the Reality TV aspect of this, since that is in many ways what NASA's been doing all along without the trumped up low-brow drama and I wouldn't expect this here either, though we got it with Biosphere 2.

This thing won't happen, it isn't up to the task technically or financially, and if it did those people would probably die en route or shortly after. They wouldn't, in the optimistic scenario, live out full lives. Most likely if things went well we'd end up having to mount a disgustingly expensive retrieval operation or a bigger colony, to no tangible gain for science or economics.