Destiny, I would suggest you to go further with US History it is vvvvvvvvvvery scoring and easy plus short as well. Yes, Off Course you should watch out the 2012 Paper of US History. But, according to my experience it is the best choice.
Besides, You asked for your combinations, I would suggest you the combination..

Political Science (scoring 80%)
US History (scoring 90%)
Constitution Law (scoring 60%)
Punjabi (scoring 92%)

The final decision is in your hand...