Examined both photos very closely and the perspective was slightly off. There is a really good original structure foreground reference point just below the now-missing tower on the near side of that whitish open area. An unmistakeable square white attic window. Lining that up with the horizon, it's off just a bit. Did you climb higher and slightly to the left?
I once tried this same thing by driving up Six Mile Canyon Road above Virginia City with a 4x5 camera and an illustrated copy of the Eliot Lord book. Got pretty close as well. I can remember how much fun I had. You're making me feel young again.
Can't wait to see the final result!