u/Dirtypeanuts

I'm a new player slowly farming up transmogs for my class and love legion raids and the sets from them.

One of the sets comes from Antorus the burning throne but to gain access in that area and reach the raid. It appears i need to do the quest "uniting the isles" which requires becoming friendly with alot of factions (i have assumed in the legion zone)

What is the most efficient way to gain this reputation with this 50% rep boost this week?

Do i level an alt via the legion time walking, should i spam legion time walking dungeons or do i just quest in the zones with my 90?

Any advice is appreciated