Yeah mine don't fit together either (English Language, Geography, Economics) because I wanted the breadth to be able to decide later exactly what I wanted to do! I managed to do that by picking up an Extended Project this year and tailoring it to the course I've decided to do at university (Linguistics). I just knew I didn't want anything to do with science, but I wasn't sure exactly what. I like it when people have a weird mix, because some combinations are just SO overdone (obviously some people have to do them because of competitive courses looking for specific subjects etc.), but if you don't know what you want to do I think it's good to split between types of subject, if only so you find out what you're REALLY interested in and give yourself some variety!