Hello all!

I'm planning to stay in Lijiang for a few days in May. From there i'd fly to Beijing on May 31 at 8 am. Due to i have to get to the airport in advance i need to know if there'd be any problems. My guess is that i have to get there at 7 am at the latest. There seem to be buses linking the city with the airport but i don't know if the information above is updated.
In case i decided to catch a taxi, would there be any problems to find one so early?
Thank you everyone