Well at my school we only get 4 options and 1 has to be a language and 1 has to be a humanity e.g. Geography or History. Then we get 2 options to choose anything. I chose Spanish, History, Ethics and Music. History is actually alot of fun i really enjoy the topic but I am a bit of a literary nerd :/
It sounds like you're a very mathematical kinda logical person so i can see why you'd hate art and pe. I suggest doing maybe History because History&Geography together look great on a CV or Music if you need something creative because I think it's the most maths based creative subject personally. Ethics is also fun but it's alot of religion based stuff which is interesting to learn about but not everyones cuppa tea ya know :P Hope you make a good decision good luck bro!