Hi Don,
For me, the last one is better by far. I think I would try, but be prepared to throw it out, selecting the foreground with a mask, and brighten it even more, possibly just drop in the colour version of that area (that may look odd, no idea unless you try it - coloured foreground, B&W the rest of the image.) wrt. the clouds' line, then I'd probably use the clone tool.
The image works quite nicely if the bottom is cropped off, (height now 4 inches, crop off bottom 0.75 inches) leaving just some of the grasses in the bottom rh corner. However, of what I am saying, I may not say if I was looking at a full size print, just trying possibilities.
Best wishes,
Ray