1) That's quite a wide subject area you will end up specialising in one very specific area
2) When you do research for 3-4 years you don't always feel the same at the end, I wanted a research career at the start, now realise I wouldn't enjoy it
3) I get the impression there are less studentships, grants and postdocs than there used to be. You will not earn a lot of money as a postdoc and there is job insecurity and a lot of competitiveness. Being good at the subject does not mean you will automatically progress of get funding.
4) If you move from science it could take years to get the salary of someone who started "work" earlier, but you would probably overtake them in salary/responsibility.
Maybe you should talk to a careers advisor, or some academics in your department.