What other A-Levels are you taking and what do you want to do at Uni? That might help you make your decision, and us advice.
I took History at GCSE and I take it at A-Level. I use very little of the skills learnt at GCSE, other than a brain that can hold copious amounts of weirdly specific dates and events. I don't think you should struggle. You basically need very good memory, a willingness to revise as there is a LOT of content and the ability to form and debate arguments using historical knowledge. Oh, and the ability to stay interested in something even if you don't care so much for it. I do The Tudors and The Russian Revolution - I love The Tudors and hate Russia, just because it doesn't really interest me as much but you have to keep with it nevertheless.
Out of the subjects you've suggested, History is the only facilitating subject. It depends on what your others are but if you've only got one or none otherwise, I'd definitely recommend taking it. Having 2 or more facilitating subjects opens lots of doors.
Hope this helps X