Looking for suggestions on where to visit between the dates of 23 June - 05July 2013

Hi,
I am planning a trip to China later this year. I have a few things organised, but have about 12days between 23 June - 05 July to myself and not sure what I should do. Current thoughts are: Yangshuo - Hainan (Sanya) - Leshan - Jiuzhaigou - Chengdu - Beijing. I will be visiting Shanghai, and a week cooking school in Yangshuo before the 23rd June, and from 5th July, will be joining a tour group and will visit Xi'an and Kashgar. Is there anywhere else you would recommend I visit? Would Kunming be a better option then Leshan? Or is my current itinerary ok?