I applied for this course and got rejected, however in hindsight I wish I'd applied nat sci at camb
Anyways, Definitly go with maths, further maths, physics and the 4th personal preference. I can't stress the importance of further maths which rather annoyingly no one informed me of when making my decisions. Probably steer clear of philosophy to be honest, sounds weird but it doesnt give you an advantage in anyway and in fact in some ways its a disadvantage. I never took it but in the module of philosophy I do they are constantly telling people to forget what they learned at a level and combine that with the fact that its not exactly the most highly regarded A-level...
Personally I had Maths, Physics, English and Chemistry and if I could pick again I would have gone Maths, Further maths, Physics and English.
Having an essay subject is a help as they ask you to submit two essays as part of your application.