tbh I just bought the tenshodo invite and handed it in and resold it (you get a copy back) which wasnt too bad.

To get to Whitegate you probably need a bit of help if you are under Lv30, just go to Valkurm and get the three subjob items again, then go Buburimu Penisula (get the ship from Selbina to Mhuara then step outside Mhuara.. you are there) and get the three subjob items from there also. Hand them into the Tenshodo NPC, wait a while, go back to Mhuara and get the boat to Whitegate