I did this hike solo yesterday and loved it. This is an incredible hike with numerous open views, lush moss-filled coniferous forests, hardwood forests, and streams and ponds. I would rate it as moderate to strenuous due to the trail being steep at parts, the multiple ascents and descents, and three stream crossings (between the east peak of Black Mountain and Caribou Mountain.). Hiking poles came in handy for some of the descents and the stream crossings.
Here is a map of my hike.