Reaching the level 4 is not that hard, I reached it in a day or 2 when I participated in BTCGOSUxBCgame contest some time go.
I did not even need to spend a lot of money to reach it, you can reach it with small bankroll as long as you know how to do it effectively.
I've submitted my prediction few days back although  I'm not sure with the prediction as it is really hard to predict World Cup.


I have France vs Netherland in the final and chose France as the winner
Who knows that France will be able to keep the title, its been long time in the history to see a team win the world cup back to back.