Oh no. You wouldn't do 1/2000th at f/22 - that would be like taking your pathway and placing it on Zone 3. I can get a headache thinking like that too.
The very first thing you did was right, 1/500th at f/8.
Relax, with the Zone System, you would try to leave the light meter there. Take the picture now if you like. No matter what, that would be the right shutter speed and f/stop combination to expose the film properly.
With your shadow placed on Zone III your highlight would fall on Zone VIII according to your meter readings. If you really want the highlight lower, on Zone VII then yes, you want to develop less.
But no matter what you shoot at 1/500th at f/8.
Why not an equivalent exposure of, for instance 1/125 @f16?
[FONT=Comic Sans MS]Films NOT Dead - Just getting fixed![/FONT]