Those are what I am doing, and when you tell people you are doing them they think you are mental! Are you hoping to do medicine or something similar?
I got the exact same reaction, haha. I dropped Chemistry two months into A2, though, because I found the excessive detail incredibley annoying and unecessary after deciding to do engineering. Lack of motivation, I suppose..
Do try and keep all four, though, people think you're cooler then And I picked up doing the EPQ to make up for dropping one, but I have to say I would have MUCH rather preferred four coursework-less subject than three plus coursework..