Summer Time Day Hike:

Complexity: Hard
Terrain: Rocky and flatland - Have to climb couple of mountains. Pretty challenging for first 10 miles with few elevations but rest was downhill most of the time
Trekking Pole: I did that without a hiking pole. It might help as its long.
Foot Wear: Better wear something with good grip, the rain makes the rocks slippery. Lot of protection needed for your toes
Scenic View: Lake was beautiful, you can swim here. Every mile had a scenic view, better take your camera
Trail Markers: Trail markers are easy to locate but as this is a combination of lot of trail. My GPS watach went choppy because of tall trees, So take a map.
Parking: Enough parking for 10 cars at harrison state park visitor area. You can even park on the road. Vistor area has restrooms
Permit: No fees
Animal Encounter: Seen couple of deers running around
Overall timing: I completed in 9.5 hours at 2.4 mph with lots of photo breaks. Start early to do day hike
Streams : As there was lot of summer rain, i could see lots of steams. Plenty of water
Traffic: Saw lots of hikers heading to the lake which is in the first few miles
Campsites: Lots of dispersed camp sites around the lake, I even saw people fishing
Pet: Take plenty of water, its will be very tiresome for your little one.