Here's my justification:
English Advance - strongly recommended by school (everyone had to do Advance in Yr 11),
English Extension 1 - needed for EE2, plus I like the topic,
Maths Advance - needed for engineering,
Maths Extension 1 - needed for engineering,
Physics - needed for engineering,
Economics - going quite good in it,
Business Studies - doing quite good at it and want to start a business when I'm older,
Maths Extension 2 - just trying it out because I'm alright at maths.
English Extension 2 - major project and no exams.
As I said before, I will most likely drop either EE2 or ME2.