Step 47 and 48 should be switched around.
Step 46 is Elder Mistwalker (Dire Maul - Feralas)
Step 47 is Elder Bladesing (Cenarion Hold - Silithus)
Step 48 is Elder Primestone (Crystal Vale NW of Silithus)
Step 49 is Elder Thunderhorn (Un'Goro)
As it is now you fly from NW of Silithus to Un'Goro, which means passing over Cenarion Hold. Therefore you have back-tracked and made the journey longer.
Step 46 is Elder Mistwalker (Dire Maul - Feralas)
Step 47 is Elder Bladesing (Cenarion Hold - Silithus)
Step 48 is Elder Primestone (Crystal Vale NW of Silithus)
Step 49 is Elder Thunderhorn (Un'Goro)
As it is now you fly from NW of Silithus to Un'Goro, which means passing over Cenarion Hold. Therefore you have back-tracked and made the journey longer.