About the seats being filled, have you ever voluntarily sat at the first row of a theater?
And seat #1 is like 'in the middle of nowhere', so people will be scared to sit there as well... That's psychology for you...
About the measurements, they don't look half bad for a first run, actually.
Seat 2 and 3 have a null, that will be hard to do much about, but it's pretty narrow.
The area from 50Hz to x-over will be filled in a bit with the fronts, so don't worry about it. Do some sweeps with the fronts engaged as well.