I'm sure you'll be fine as long as you turn around when your day is half gone, or be prepared to ride in the dark or camp. Some of the roads are super deluxe freeways, while others are like goat trails. You could learn a lot by loading the tracks into Google Earth and take a look from that perspective.
The "knoll" isn't what you think. I'll let it be a surprise when you see it in person. It taught me a lesson!