Hi. I'll like to take a flight from Shanghai to Chengdu to visit jiu zai gou, er mei shan and qing chen shan, and then go see the panda. After that, I'll like to take a train back to Shanghai, stopping by 1 or 2 more cities in between. I'm planning to make this a 10-days trip, free and easy at a casual pace. I have a couple of questions:

1. do you think I'm packing in too much for 10 days?
2. Which city (or cities) do you recommend i should stop over in my train ride from Chengdu back to Shanghai? What are the places worth visiting in the recommended city (or cities?

Thanks for your help.