If you can see yourself easily navigating the stairs, for multiple years, with the Wolf Creek 850, that's what I would do. Get it set-up with power jacks and that would be perfect and comfortable for a single person... or maybe two if you wanted to bring along a companion.
Biggest advantage... the ease of navigating roads where it would be difficult to get a TT or 5th in. What that means to me is that you can more easily escape the crowds and find your own slice of heaven... if that is what you are looking for. And at 2000 lbs, your CTD Ram should have no problem with it even at altitude.