If possible and its is portable enough, have a couple of spots so you can adjust for the wind, travel patterns, ease of entry and exit for you without distrubing the area too much.
If that really isn't an option. Then I would say set up for the best open shooting lane for the prevailing wind, and the farther back you can, the better (within your consistent shooting range for a clean hit). Just gives you a bigger buffer zone between you and his eyes and nose.
Also, as far as shooting lanes, it pays to take into account the curve of the arrows arch while in flight. Sucks to have an arrow bounce off a too low branch or twig as it is heading towards its target!!