Choosing college for MATH

Hi, I will be applying to study math at cambridge and I'm having difficulty choosing the right college. Right now, I am deciding between St John's, King's or Queens'. For St John's I understand that there will be a 2 subject based math interview one with an applied math tutor and one pure math tutor. Thus, will the interviews be split solely into pure and applied? Also, I was wondering whether they tailor the questions asked at interview to your strengths (i.e. at Queens' they let you suggest up to 3 areas of maths to be asked on? Any truth regarding that?) personally i prefer it that way as i'll feel less panicky in a sense. Same goes for King's.

Thank you so much for your time.