If i were you, I'd do economics because from what i hear, its enjoyable and also more of a respected subjects by top unis..if youd want to go to one..
and for english, depends on what you got at gcse. i was good at both lit and lang at gcse and taking it combined at AS and i think its best because i dont have to read heaps and i learn a wider variety of STUFF than i would just doing lit tbh :)
History and maths are both respected, as is English lit. It is really good to do a language! I'm doing economics, and the topics are similar to GCSE. It relates to real life too, so it is useful in that sense.