Could you please guide me regarding optional subjects
I am thinking of
Physics
International Law
Mercantile Law
American History
Journalism

"OR"

Physics
Mercantile Law/International Law (please suggest which one)
Indopak history
Journalism

i know for fact that I do not have much time left. (I am working as Electromechanical Project Manager in Construction Field so I can not spare more than 6 hours will go for one month vacations in the end), I can change subjects as directed by seniors if their thoughts could ring the bell.
I am very good at remembering things and can still write the whole book of pakistan studies from metric if i get to go through it once (Insha'Allah pretty sure) please advise keeping this in mind
Much Obliged