If you have opted International Relations then why don't you opt International Law because both of them have an overlapping syllabus. Preparing IR will help you prepare IL easily.

"Governance & Public Policies" and "Town Planning and Urban Management" both are newly added in optional subjects, so they might be risky in terms of what comes in paper,whether their books are available in the market or not, and whether they are appealing to you or not.

In history subjects, USA History seems scoring and easy and rest three have their numbers slashed to 100 from 200. So they might be little risky but decision is all up to you.

From group-7 Sociology and Psychology are good subjects as they are scoring. You may either choose one depending upon your interest.