Assalam o alikum

I need suggestions about choosing scoring subjects in respect of changed syll
abus for 2018, I have read many posts on this forum from where I got encouragement and planned to start this endeavour. Many members have suggested following subjects combination which I have also planned for:
IR 200
US 100
ES 100
IL 100
Now I am confused about another 100 marks subject which I don't about to choose from group 3 or group 7 also neither of these above mentioned subjects I have studied before, so I need suggestions about the other optional subject aswell as opinion about these subjects in terms of scoring in 2018.
Thanks