@ Waqar
All subjects are equally important. You can`t mark any negligiable. Essay and English are usually considered as hard nut to crack. Consequently, Most of candidates could`nt get through coz of these subjects. Hang on, Other Compulsory subjects are not like a piece of cake but they have pre-planned syllabus atleast.
Let`s come to Optional subjects. You should pay heed to your academic subjects which are well grounded in your mind. They seek for alittle concentration. If you`re weak on them then you`d bear tough time for high persistence. I think, Following Optionals are less time taking :
1. Journalism
2. I.R (coz of CA analogy)
3. Sociology
Moreover, You can choose any History subject. You can accoutre yourself for above subjects with in 1 month.
Just keep in your mind that It is the matter of "Do or Die". You must try to cover Compulsory subjects at first. Guidance is mentioned
here. You`ll be bound to pay 10 to 12 hours a day. You must park yourself for apposite hours.
I`ll append further stuff as soon as possible. I can`t accomplish it coz paucity of time.
Take care,
Allah Nagheban,