Well, I just reckon its going to be really really difficult with the current timeline to use the current infrastructure.<br /><br />First, LC-39 has be operational in 2010/2012 to support the Shuttle flight programme. Even if they cut it short to 2008, you're going to have a problem of different vehicles. In the past it has never been possible to launch two completly different vehicles from the same pad, even if you want it. Just look at the SRB+CEV and SDHLV, they might use the same engines and such, but there is one hell of a difference. So I doubt it can all be launched from one pad.<br /><br />Even if its technically possible, there is going to quite some gap between the last shuttle operations and the commence of the SRB+CEV/SDHLV operations. Say 2010 is the last shuttle missions, might take a year or two for the pad to be rebuild. That would make it 2012, testing of the new hardware, because even though its not completly new, I would first put some dummies in the CEV, for the first few flights. Before all is up and running, it will be quite tight to reach the 2018 date.<br /><br />It would be much smarter to have two seperate pads for the SRB+CEV, so testing of the system can start shortly after the shuttle has stopped operating, resulting in a small gap between the two. And then LC-39 might be able to be upgraded to the SDHLV.<br /><br />