Which particular bits of maths chem and bio do you like (eg pure, applied, mechanics/inorganic, organic/human, plant etc etc).
Also what do you enjoy doing in your spare time? What sort of documentary would you really hate to miss? Do you read any newspapers - if so which and what sections? What websites do you enjoy looking at (please don't say porn)?
These sound bizarre questions but if you answer them I'm sure people here will throw all sorts of potential course titles at you which will give you a good starting piont to start prioritising which ones you prefer.