Jim,
So PLEASE tell me if I am out of line here, but I was so in love with the massive wave shot that I copied just the very small jpg and played with it. I want to emphasize that I do not see anything at all wrong with your excellent composite, but I think there is a lot that could be done with just the single image of the huge wave, especially if one had the full size raw file like you do. This is what I got in 5 minutes of playing, mostly boosting the sky saturation and bringing down the luminance and then a very small shadow boost to just start to pick up some details in the sea stack. The wave action, sea swells, and birds are just amazing, and the backlit huge wave spray is over the top! (pun intended...

)
Anyway, I hope you are not offended and realize that I only did this because I am in love with this capture of yours!
ML