2' 6" - 2' 9".
Nice functional form.
The points other posters have made are related - if you could step down in your stirrup and put the grip more in the flat of your calf, rather than the back of the calf (gripping with the back = toes out); your stirrup leather would move closer to perpendicular and that would allow your upper body to fold more naturally and appropriately for the size of the fence.
The weakness in you lower leg position is creating the slight roach and duck in your upper body; fix one and you'll fix the other.
BTW, these are quibbles, but important quibbles. Lots of folks get pinned in eq classes with similiar or worse form. However, since you're clearly serious about improving your riding, and because you've asked, I will say that working on these things will allow you to progress to the next level and beyond.