San Diego is my second favorite place (first is Denver). I spent many winter breaks in San Diego and Coronado and loved it, but I think it is too far away.
Tennessee Pass would be great, but unfortunately the railroad will not lease any of its property or track. I would like to keep the equipment closer than Creede or Alamosa, although its possible they might be the only choices.
I've been focusing on closer locations, but it has to be with either a shortline or private companies that have rail. While RTD has expressed a willingness to lease part of the Boulder branch, as you all know, it is isolated. But could be a good back-up.
DQ