A.O.A seniors

for CSS i want to Choose "Economics" as an optional subject because i have Master in Ecconomics and strong,analytical, qualitative and quantitative grip on this subject, but most people said it is low scoring, so whats your opinion about that,
My Combination

Economics/Islamic history
Psycology
Punjabi
Journalism

Please guide me about subjects scoring and syllabus i am waiting for your positive response