Does your current sixth form/college or the one you would like to go to, not offer any of them subjects, I find it quite surprising the amount of sixth forms that don't offer common or important subjects.
My current school's sixth form offer business, law and psychology, You should definitely consider a sixth form which offers these.
In my opinion,( you or others may disagree) languages are over rated, the benefits people talk about including teachers are not always true and may not apply even in a business. If it is important enough then in a business they would expect you to be able to talk it fluently, you can pass or do well in a language but it does not automatically make you great at speaking it.