I did the comparison and I eliminated the peak at 40Hz (purple) that you pointed out and tried to stay as close as possible to the ideal trace. However, now I have a dip at 60Hz and a peak at 50Hz(blue)
What I'm trying to understand from reading posts on this forum concerning sub plots is what to avoid, like dips or peaks in what regions where they have the most audible influence. I can see the sub signature in the 15Hz to 40Hz region and I've put the sub where I sit and moved the mic around the room to find the best location.
Here is the final plot I think I can trim out the peak at 50Hz:
