up yungu cable, night on mountain down Songgu Nunnery cable car and then to Taiping Lake

Wondering if it is possible to fly into Tunxi from Shanghai. Spend the night in Tangkou take the Yungu cable car up. Spend one night on the mountain hike to the Songgu Nunnery cable car to get down then catch a bus to Taiping Lake to spend the night. Once in Taiping is it better to catch a return flight out of Tunxi or catch a flight out of Hefei?