How can I find the gate to subway station at Kunming Railway station?

From the Rail station, I want to go to Western Hills Station (Dragon Grottoes).
1.Where is the nearest gate to the subway?
2.From Railway station, I have to take metro line 1 -- change to line 2 at South Ring Road -- change to line 3 at Dongfeng Square -- to Western Hills?? Correct?
3.What exit at Western Hills station to the ticket entrance?
4.How long does the subway take? (approximately time) compare with bus? Which one is faster?
5.How much for the subway ticket from Railway to Western Hills?

Yui