bus or train from Kunming to Lijiang

hi,
we will arrive in Kunming around 10pm, it probably too late to catch the last bus or train to Lijiang, right? we don't mind spending overnight in Kunming.. any suggestion on how to get to Lijiang, by bus or train? if we take bus, shall we go to the west bus station (xibu keyun zhan)? if we take train, which train station shall we go to? is there any chance to buy the ticket online, as I live in Guangzhou?
thanks so much in advance!