First, congrats! Second, I'm jealous. You may have been here but I always start here: Map Center | Huntplanner
It use to be an o.k. tool, but now that they've overlayed the areas on google maps it's a better tool! I've never hunted that mountain range but I've hunted the west side of that valley, near Howe and up west of the Donkey Hills.
Are you local, know the area....? We may be able to help more with a little more information.