There are two parts to this wilderness area--North and South. The North is around the Graywolf River and a close easy drive to the trailheads. The high section is next to the national park, and runs along a ridgeline. The South is a bit farther of a drive to any trailheads. Plenty of trails, but most are bordering on steep. LOTS of hikers in the area--because they can take their dogs (companion animals) for hikes, which isn't allowed in the parks. Animals are around, but can be phantoms in there. As for high vs low....they are where ever (not much help, I know). Find lots of good trails in the heavy stuff, but you can't see very far. Up high, however, you can see for miles.
Do you know which side you are more interested in?