Mr. Irfan Bhurki,
If you are an MA economics, then why you didn't opt economics? it is a 200 marks subjects and scoring if you could tackle it properly.
Indopak history is good, if you are interested in it then it is real good. A bit lengthy too. But it helps you a lot in Pak Affairs, so, it's okay.
Geography is a scoring subject, but it is quite a lengthy. it can give you a real hard time if you do not tackle its paper properly.
Muslim law is not good enough for now.
journalism/socio are good but not better than regional language or public administration.
I would suggest you to opt
1. Economics (just check its past papers, you will find them easy for you, moreover it awill also help you in economy related things in essay, pak affairs and current affairs)
2. Indopak
3. Geography, only if you are really really interested in it, otherwise go for journalism+regional language.
final decision rests in your hands