I know that this forum is for people choosing A-Levels, however I felt obliged to comment as someone who is currently studying at AS Level. I can't help but notice that many of you want to take up 5, 6, even 7 AS's. As a student who attained 13A*s last year and placed Top in Northern Ireland at Double Award Science, even I struggle to cope with the demands of 4 AS's in Chemistry, Biology, Physics and Maths. You are very naive to believe you could juggle so many subjects. I think the problem is, is that you underestimate the level of work required in an AS. Honestly, GCSE's are the easiest things you could ever do, A-Level, is a completely different ball game! The depth that you study into is unbelievable, I couldn't even compare GCSE Biology to AS.
I just wanted to warn you, that unless you want to do nothing else but study, there is no real advantage to doing so many A-Levels. Universities prefer all 3/4 strong subjects compared to 5/6/7 average results. Stick to what you're good at and play to your strengths!