Hey, all these combinations are great. My best advice would be to go with what you enjoy! You said you enjoy English lit and art so I think you should defiantly go with these two.
In terms of facilitating subjects, I don't think you need to be too bothered about this. You're much more likely to succeed in A-levels which you enjoy! Similar to the previous reply, I also think Biology would be a good option along side english lit and art as this opens up doors to science degrees.
Best of luck!