Westminster Sixth form

Hi all, this is my first time using this site so excuse me if I do anything wrong. I am currently in year 11 at an all-girls school in central london. I really enjoy it there and will probably stay for sixth form, however I want to keep my options open so I went to the Westminster School open day today. I found it really impressive, though way more intense than what I'm used to. I guess my main question is- people currently at Westminster, do you actually enjoy it? All i heard today was how great it is and how many clubs and societies there are and how student-led the school is, but as someone who as BSd my way through a fair few tours at my own school, I don't know how much I can trust it.
I was originally only planning on doing 3 A-levels, but Westminster insists you do four, and it also doesn't appear to offer politics (though please correct me if I'm wrong), so the four i would do would probably be english lit, history, economics and politics (??).
Any feedback would be seriously appreciated, I'm feeling a bit overwhelmed here :')