After living in Shanghai for over 8 years and riding in and out of Shanghai numerous times, I have to declare that "Scenic road" and "close to Shanghai" are oxymoronic. You won't see anything worth looking unless you pass beyond either Anji or LinAn, about 250km outside of Shanghai, after which the sky looks bluer, water tastes better, air cleaner with plenty of twisties to boot. I strongly suggest that we focus on Jeff's suggestion and venture into the expressway so we can get to interesting scenery within 3 hours, vs. 5 to 6 painful and dangerous hours.
Jeff, is ther any plan to put your scheme to practice? With the expressway option, we can do a lot in a weekend.