That last pic is from my widest seating postion, it is just outside of the the M80. I haven't taken any readings yet.
I have a similar seating position relative to the speaker placement and found that without some toe in all I heard was the nearest speaker. My current toe in placement points the L and R directly at the center listening position (I used lasers to cross the paths tight at ear position). You should have seen the rolly eyes from Mrs Classic. Classic!