According to WGTNiv.. there are more considerations than just one's average.
Just play the game, and when you're ready, you'll move to Master.
It's not a race... those who bust their hump to make Master either:
- Whine and cry that it's too hard
- Create another account because it's too hard
- Leave the game because it's too hard
- All of the above.
Get there when you get there and learn how to play as you get there.