Transport from Chengdu International airport to Emeishan

Our flight arrived at 1.40pm at shuangliu airport and we would like to go straight to Emeishan. Please advise how long does it take (incl the shuttle bus) to get from T1 to T2 (where the train station is). There is a train departing 15:07 and 16:42. We are thinking of purchasing the ticket for 16:42 as we don't think we can make the 15:07 departure.

Are 7 seater taxi easily available for hire to drive to Emeishan for 4 pax with luggages and how much would it cost? How long would it take? How are the road to Emeishan? Thank you.