Universities in the UK usually dislike the combination of Economics and Business Studies. If you wanted to apply in the UK, it may be worth considering whether you should swap one of them for another subject. Since STEM courses in the UK also usually expect you to take two STEM subjects to HL or equivalent, taking a second science instead of business might not be a bad idea.
Which depends on your interests and aptitudes, but bear in mind not taking HL Maths would limit the range of courses you could apply to with just HL Physics and HL Chemistry. HL Chemistry and HL Biology are prerequisites for a wide range of bioscience and medical related courses, which also normally don't require HL Maths, so that combination would give you more options.
That said, Economics degrees in the UK almost universally require HL Maths, so it's unlikely you would be able to continue with economics after IB if you didn't take that. If you enjoy and/or are interested in economics, it may be worth planning to take HL Maths (in which case, taking HL or SL Phyiscs along with Chemistry is more of a reasonable choice).
Of course if you aren't particularly strong in STEM subjects or don't really have much interest in them, taking three such subjects would probably not be such a great idea. If you are mainly interested in economics and/or business things, I'd probably suggest taking HL Maths and swapping business for another social science or humanities subject.