hey there, you won't miss out on any job opportunities for choosing between a BA or a BSc; choose whichever one you see yourself beign able to enjoy the most through its modules so that you can achieve the highest grade possible. Yes the BSc will be more quantitative and that looks nice, but honestly, warwick is a top 6 target university for finance/IB many other sectors (oxford cambridge lse ucl imperial warwick in no particular order; perhaps maybe kings... 7th? lol). You have bright future prospects in terms of graduate roles. myself I'm going to kings this year for ppe (warwick gave me an alternative philosophy and politics offer). I took further maths at a level since I like maths but not a strenuous amount; but therefore will probably choose the BSc pathway when the time comes in second year, through choosing modules that are on the more economics/quantitative side. And lastly you said you will take econometrics regardless; and so you are calm! though, it may be worthwhile to note that doing the BSc pathway will have you see more quantitative modules like that, which may help out on the econometrics module (it is tough I have heard), but, if the module is compulsory for both pathways then honestly, they believe that it is doable through a more qualitative BA route which means you will be just fine honestly.