I don't know what towns you're planning on staying in.
My favorite roads are 123 from Hagarville to Mt. Judea, especially from Lurton to Mt Judea, 374 from Mt. Judea to 7, 16 from Clinton to 7, 21 through Swain and Deer, and 27 just South of Danville.
Pedastal Rock State Park isn't on many maps but it's about 5 miles East of the 7/16 junction. A 60ft waterfall if it's been raining, views, and caves. Never very busy, and a nice 2 mile hike to break up a ride.
I strongly recommend Mario Caruso's "Arkansas Rider's Guide". $15.95 email him at
guinzomoto@aol.com
Give me dates and I might meet you one day for lunch.