Is it wise to take the subway from Hangzhou East Railway Station to Fei Lai Park? Which stop is it?

You can take metro line 1 from East Railway Station to Longxiangqiao Station, Exit B3. Then transfer to bus no.7 to Lingying Bus Stop. Walk southwest around 450 yards to arrive at the destination.

In addition, taking the cab is actually the most convenient. The cab fare is CNY 40-50 in the day time.
You can choose the way you like. :)

Thanks, Camden!