Andrew - Here's my post-processing result:
First I removed a bit of noise from the blue channel. Then I straightened and cropped the image to my taste. After some basic levels, hue/saturation and curves adjustments I set up a gradient with the foreground color sampled from the dark green leaves at the bottom of the pic and background color sampled from the blue sky at the top. I applied the gradient from bottom to top, adjusted opacity etc. in an attempt to create more depth differentiation front to back so the image might 'pop' a little more.
I like the smoke which adds interest. I tried to emphasize the fact that the smoke has drifted L to R, visible as haze, against the sky which needed a little more blue than in the original to separate smokey haze from sky.
This is a detail-rich landscape that would be easy to over sharpen. To avoid that I down-sized using bicubic instead of bicubic sharper and sharpened selected areas by hand.
Thanks for sharing your image so we could all learn from it.