Original post by chapmouseThese are fine, provided that the subject you drop as you continue to A2 is English Literature (Unless you carry them all on).
I feel obliged to tell you that doing English Lit alongside those options is a pain in the arse. Two of your subjects are pure maths, and the other is >70% maths; so clearly you enjoy maths (if you don't, please reconsider your options). When you enjoy a subject, you are both good at it and are willing to spend more time on it. You may have a night where you've got a piece of maths homework, a piece of physics, and an english essay, all to be in the next day. While you're doing the maths homework, you'll feel "oh, while i'm doing maths i'll just work on my physics" and neglect your essay writing. It's very easy to ignore the length of time and attention that essay writing requires.
I'm in my AS year, and I do Maths, FM, Chemistry and Physics, with a view to do Physics/NatSci at uni. I was considering Philosophy instead of Chemistry, but decided to go with Chemistry to keep more doors open. While I am still gutted I didn't get to do Philosophy, i'm really happy doing chemistry, it's a lot of fun. In any case, Science homework takes considerably less time than philosophy homework would.
But don't take a further science just because you want to do a science at uni. There's no point in doing chemistry if you don't like it. Of course if you have as much desire to do it as english literature, it may be better to go for chemistry. The more science the do, the more appealing you are to universities.
Consider maybe taking five subjects? If you're looking to go to Cambridge, you clearly have a strong academic background, and it might be a good idea to do five AS levels, and drop down to four/three in your A2 year. A friend of mine that is currently reading Chemical Physics at UCL did A2s in Maths, Chemistry, Physics and Art. While doing Art has contributed basically nothing to her place at university, she did it just because she loves art, and wanted to carry it on, and doing an A level urged her to do it.
I hope that helps!
It depends on your desire to do NatSci at uni. If you REALLY want a broad and whole scientific education, then you should really be doing as many sciences as you can, so i'd go for chemistry rather than physics. If you've read the above message, you'll learn that I basically chose to do Chemistry over Philosophy, because I personally want a really quite broad scientific education, and having more science a levels really helps you to have that.
Don't take Economics just because it has the best grade rate at your school. If you don't enjoy it, you'll struggle to get a good grade, anyway. In addition, universities can see the success rate of the subjects you study at your school. If you get an A* while nobody else at your school gets one, you look fantastic. Similarly, if you get an A* in Economics, and everyone that does it gets an A*, you look pretty average.
So in short:
If you like science, do science. If you're considering economics, Maths, FM, Physics, and Economics provides you with a pretty sound basis.