If you are in a high contrast lighting situation (bright sun w/ hard-edged, distinct shadows, etc.), then you might consider pulling the film as you suggest. For other lighting contrasts I would not recommend the OE/UD route.
Pulling is usually recommended only when you have mixed lighting situations on the roll or if for some reason you would want finer grain at the expense of film contrast.
Testing is the only way to discover how long to develop.