Base map (A3n pdf) to scale, no 'entrance/exits spaces' noted
Here is an early attempt to show exits(actually Entrance spaces).
I think it could work, using the arrows to point to the corresponding Door.
The big problem is the front Door. There is going to have to be wording that tells you to count that space(which is bisected by the Door) when moving and not to count it twice as two Half Spaces.