If possible, you could catch the coach departing from Pudong Airport to downtown Hangzhou directly at 19:30. The bus terminal in Hangzhou is about 20kms away from Linping, so I'm afraid that you have to hire a cab driving you there at night.

In case of missing the bus, you could take the shuttle bus Line7 to get to Shanghai South Railway station firstly. Here, you could catch an express train to arrive in Hangzhou in 2 hours.