I'm in my 2nd year of A levels and taking Biology, Maths & PE, last year and part of this year I took Chemistry. If I could go back 2 years to where you are now, I would give myself the following advice:
- PICK SUBJECTS THAT YOU LOVE - I took chemistry because after getting full UMS in it at GCSE; I though I was good at it. However that combined with a lack of passion for the subject doesn't work out well. I dropped it 3 weeks into year 13 and managed to not have to take any exams in it, thankfully. Arguably, it also has the biggest step up from GCSE, and you really have to be able to understand everything. English therefore sounds like the perfect choice as you enjoy it, and adding in something in different and more creative will be a nice change from the other subjects
-DON'T MAKE IT UNNECESSARILY HARD FOR YOURSELF (in terms of the subjects you take & number of a levels) - Universities only require 3 A levels, obviously doing more is arguably impressive, but not when it means 4 A levels at lower grades rather than 3 at high grades. In terms of doing biological sciences at university you'll need a biology & and a second science subject (either chem or maths would count for that) but aside from that they really don't care what subject you take. I got an unconditional for biological sciences at Birmingham with Bio, Maths & PE
Obviously feel free to ignore this, but what I would do is maybe start out with 4 subjects with the view to definitely drop one of them (if you do this, explain to your school your intentions and check they are okay with it). This will give you a feel of what the subjects are like,so that you can make a fair judgement, but obviously bare in mind that the first things you learn are a lot easier than the stuff you do at the end of A2. As much as it's annoying that I basically did chemistry for no reason, if I had only done 3 A levels from the start I would have done Maths, Biology & Chemistry, and would have not been able to have PE to fall back on when I realised chemistry was't the one. Dropping chemistry was by far the best decision I've ever made and probably contributes to getting an unconditional. So for me, being realistic with what I could achieve payed off in the best possible way.
Hope this helps, and good luck!