Room response included in Xover design?

@Eriksquires: what you describe does unfortunately not say much about measurements. In your description this looks like the typical 1 meter on-tweeter-axis measurement.

Firstly, there are problems with measuring the lower midrange frequencies, as amply demonstatred by Mbrennwa in the Monkey Coffin thread: you can only properly measure nearfield until approx 300-400 Hz; your 1 metre measurement will only be valid as of approx 900 Hz in the best of cases. How to accurately find the missing 300-900 Hz range, a fair bit of which is causing our problems (or is even designed -as a dip- into the x/o?)
Furthermore, I looked at your in-room-measurements. To be honest : flat to 20-25 Hz looks to good to be true. Maybe I am wrong, but it looks more like a beautiful just one point in space coincidence than a valid measurement that holds over some area. Please do not take this is criticism, but the excursion required at 20 Hz is simply way beyond what a 6.5 midwoofer can move in terms of air. Of course there is room gain etc, but ruler flat until 20Hz...