Don't know if this will help at all but at the end of the 2nd preview clip i've just put up is that homestead shot you're regrading.

Here's a screencap taken from the preview clip of the shot in question:

I personally think that the colours in your comparison look really good, much better than the bluray but in terms of brightness it looks overexposed IMHO. Have you checked out these settings in space with a starfield in the background, seen how the blacks are affected by that brightness level?

Like msycamore I would really like to see how the transition to the Death Star and Tie Fighters looks with these settings.