Well done - great result by the sound if it and another confirmation that we are on to something here I feel! I'm actually quite impressed with how close Dirac v2 got to the user-validated measurements with REW, but I know a lot of others aren't. v1 did seem to get a lot of flack for being...
I'd suggest using the same target curves for all speaker groups,
the latest Dirac Live update allows doing that quickly by selecting the All groups option (not available at that time).
Also, the latest Dirac Live will adjust the curtains in order to define the region of frequencies where correction is applied.