I do French, Spanish (AQA) and English Lit (OCR)
I absolutely love all of them, I always heard that languages were much harder at A level than at GCSE, but as long as you have a good grasp of the language itself rather than just relying on the memorisation from GCSE then you'll be fine! The only problem with doing both is that occasionally I get slightly confused between the two, but it actually helps me more than hinders I think.
English Lit is really interesting (obviously depending on the texts you study), I found it hard to get a grasp of at first but now I really enjoy it, and I can't decide which one (I also do philosophy) to drop at the end of the year! You also have to be pretty good at writing essays.
I would definitely recommend all three, they're not the easiest of subjects to do but I'd much rather be doing subjects that I love and find interesting than ones that I just did because they're easy and dull.
(Also philosophy wasn't on the list, but I absolutely love it, I chose it as my 4th because I didn't really have another one I wanted to do, and now it's my favourite and I'm considering doing it at uni, so definitely take it into account!)