1. Play (1)Game's' of Quarantine [9 Rounds]
2. Play (2)Game's' of Spy hunt [16 Min/16 Players]
3. Play (3)Game's' of Elimination [130 Kills/ :ANY MAP:]
You should get about 5,000 EXP/ 7,000 GP from doing this, and it also depends how well you do in each game.
Do this everyday and you'll be ranking so fast, you wouldn't even notice!