This run is a bit hard to classify. The rapids aren't harder than II+ or III-, however it is continuous and fairly steep and usually has some log hazards so it is not a very good beginner run. It's best suited for those with more advanced skills (catching small eddies on the fly, and other skills essential on woody runs).
That said, it is a very scenic and lively run. It runs downfill through shallow splashy rapids with a very consistent gradient and passes though the tiny historical town of Silverson. It can be run as a backup plan to the class 3 section downstream when it's running a bit too high for comfort, as this run generally needs higher flows to be runnable. On a nice spring day it can be combined with the class 3 "middle" section downstream for a nice long run, just be prepared that if there's enough water for the upper to be running the middle section may be pushy.