IB Choices/Career Advice/Thoughts from people's experience!

We have to make our choices for the Diploma by Monday ideally although definitely by Friday. I am trying to get some advice on my subjects and would really appreciate your views/thoughts: Background: I am really excited by doing Medicine as a career. However, I know that I a bit (not overly!), but a bit squeamish at the sight of blood. Because of this I am unable to back myself 100% to say that I will be able to do. People I have talked to say that everyone is a bit uncomfortable at first and so it will be fine but still wanted some thoughts from other people. Because I'm unsure about medicine the other thing in my mind if finance. Secondly, the IB choices that I am making are two fold: 1) I want to do things that interest me + are required for a potential degree. 2) I want a subject that is easy to get a 7 in if I'm stuck between 2 of equal weighting. OK, so currently I have made the following choices: HL: Maths (Analysis), Chemistry SL: English For my remaining HL I am debating between Biology and Physics; as I say, I am stuck whether I will do Medicine. Taking Physics will still allow me to take Medicine but at a limited range of universities. (Oxbridge but not any London ones). In terms of interest, on one day I think I'll enjoy Biology more and on another I feel I'll enjoy Physics more. I love problem solving but am also very good at memorising stuff. For my remaining two SL subjects: It's greek vs French. (Ancient) greek seems to be very easy, French will be more useful later on, but French I can learn later on? Finally: Humanity SL: Econ vs Philosophy - no idea between the two. As I say I would really really be so grateful for all the advice I get! Best wishes, Rohan