Hello TSR

I'm in Year 11 at a top grammar-state school, and with A-Level choices not that far away, I have some very brief questions about my choices, that the more experienced post-count-wh*res amongst you will have most likely heard many a time.
I really want to study PPE at Oxford. I have no idea what college I want to go to, but I have no questions about that, I can decide by myself.
I understand that History and Maths are deemed to be more important subjects with PPE at Oxford in mind. Is History fairly essential? Will it significantly affect my chances of getting in to Oxford without it?
I wish to do:
- Maths
- Economics
- Philosophy
- Politics
I'm sure some of you wish to tell me at this point that I should not set my heart solely on PPE, both with me really wishing to do that course and with me what could be seen as all of my A-Levels towards it. I want to do those A-Levels (although Politics is could possibly be replaced with Sociology, but either way that would be the subject I would drop for A2) because those are the subjects that I have a genuine interest in. As well as this, all three of the subjects I want to take for A2 are on Trinity College Cambridge's list of subjects recognised as not being 'soft' subjects. I am genuinely fascinated by Philosophy, especially a more political side of philosophy. I have always had an interest in Economics, I have a very genuine interest in current affairs both at home and on a more global scale, and I am competent at Maths

. The PPE subjects also surely show a sustained interest.
I also read the Daily Telegraph, despite belonging to the intelligent left, as I like to read views that are against my own beliefs, so that I can challenge them and I have made an informed decision in forming my views, as I have heard from both sides. I am also going to start reading the Economist, something I have been meaning to do for quite a while. Is there anything else that I can do to show sustained interest? Nothing is forced, as I'm sure that I'll enjoy it.
Will not having History, or perhaps even Further Maths, put me at a disadvantage?
Oh, and please don't give me **** for thinking fairly heavily about this at a time that some may see as 'early on'.