Interesting sequence - as individual images, I think #1 is the most successful.
I think every landscape photographer has experienced the following, perhaps many times -
1. Excellent weather forecast.
2. Gets up very early and goes to favourite location.
3. Dawn sky is clear but with hints of cloud formation.
4. A few minutes before sunup, a bank of cloud suddenly covers most of the sky.
5. Sun rises on schedule but is quickly hidden behind the wall of cloud.
6. Stays that way all day.