Should I do Chemistry and Physics? Or will it be too stressful?
far too stressful in my opinion, however it depends on what career you'd like to do
yeah you should tbh its not too stressful, it opens up a lot of scope to do more courses in college, trust me i do three sciences its not as terrible as they say :')
Look at where you might want to go in college. However you can do common entry science etc with one science and a good grade in higher level maths