Economics at uni

Your A-level combination really doesn't matter that much for econ as long as you take (and do well in) maths. Taking english lit might help your essay writing ability which will be useful, but really not that much of an advantage. Its more of a case of where your talents lie, so choose which A-level you like best and therefore will do best in, as how good a uni you can apply to for economics will be based on your predicted grades.