If you're planning on going to university... just take a look at the requirements of the courses you would like to go to at the universities you like... when applying for a job, they will not even bother to look at what A Levels you have if you go to university..
If the courses you like do not have any specific requirements, you should just choose the one that you think you will enjoy the most. You will certainly learn more if you enjoy the subject.
The last point i'll make is.. don't stress too much.. it may seem like a huge choice to you now... but in the end, it doesn't matter too much what you choose at this stage. just make sure you do well in whatever you choose to get you through to the next stage with ease.
btw...nice choices so far
/ 
