Physics is definitely going to be the most preferred, however if it's between getting an A in the other subjects or a D in physics then its obvious you should go with what you're better at however, maybe you'd do well to think about private tuition in physics/maths alongside school, Physics can be really fascinating if it's put across in the right way!
It depends on what your university is looking for and what you think you'll do best in.
Hope this has been slightly clearer than mud!