Thanks guys!
PDB, thanks for those comparisons of the different home releases, very fascinating, I wasn't using any of those sources as a guide, just going with what felt 'right' to me in terms of fleshtones, the sky, sunlight, etc. looks like I didn't do too bad a job getting the blue of the sky roughly right in my regrade
My regraded shot at the end though looks a little dark in your comparisons, it should actually be a bit brighter than the 4k remaster, as you can see in the screencap comparison I posted.