I am going to offer a dissenting opinion. I think you could have achieved #2 if the picture had been taken differently. Here is what I would have done.

1.) Set the color balance with an Expodisc or gray card.

2.) Checked the exposure with the histogram.

3.) Used a polarizer or graduated neural density filter to darken the sky. Depending upon lighting conditions the former may not have worked and the later may not work well because horizon is not horizonal.

Thanks for the comments and the help. John

In my experience, #2 is easy to get in the camera. Once you have this file, other adjustments come out better.

Hope this helps. Good luck.