Funcha said:

kk650, one thing you'll want to be careful of is some purple making its way into certain shadow details. The shot of Uncle Owen at the sandcrawler exemplifies that a bit. I know You_Too did an avisynth script to get rid of it back in the day. I'd check his color correction thread for more info on that one. Not sure how you may be able to address with what tools you're using.

I'd really look into Davinci Resolve, it is free and lets you make the colour changes you require without causing problems in the other areas.

Well worth learning and there are tons of online training resources.