I opted the following:-
European History (200)
Psychology (200)
Punjabi (100)
Agriculture (100)

Experience was pleasant with all of them except Euro. History. It was a mistake that I chose it over Zoology (200). I did that because I came to like it. Later it dawned upon me that this subject doesn't fetch marks commensurate with the effort it takes to prepare.

As for CE-2016, rules and grouping—almost everything, I should say—has been changed. I need to opt 3 new subjects and study all over again to take next attempt. That's why I am not appearing in 2016. I am joining PG training instead. But, if I fail to qualify CE-2015, I plan to appear in 2017.

The subjects I have suggested you have all been tried and tested by my colleagues (medical background). And they're all doable. So, some of the suggestions are from my own experience; others from vicarious experience.