Guys, please calm down.
However - I think you should put at least some focus on your 1/2's. Put more focus on Further than you would each of your year 11 subjects, but don't put so much focus on further as to neglect your 1/2 subjects. Your 1/2 subjects are very important in establishing a foundation for Year 12, particularly for subjects like English, Physics (where Unit 2 physics IS Unit 3 physics), Chemistry (where without a Year 11 background its VERY difficult to do the subject), Methods, Spesh (yes, spesh, because for instance you develop the idea that coordinates are vectors are complex numbers, just in different languages), and there is assumed knowledge from year 11.
I highly recommend you also take some focus in your Year 11 subjects - trust me. When I was in Year 11, i put some heavy work into English Language for instance, and that foundation and the thinking skills I developed from there REALLY helped me in Year 12.

Oh and Paul, try drop the aggression a bit.