In English - never write dotpoints. I know in HSIE subjects you can - but in English its a nono.
In regards to conclusion - Neglect your body paragraph and write that conclusion.
You tell us? IIRC Accelarted (well atleast in my school) is only offered to outstanding students. So I'd say the accelerated class would perform better.
I do a few past papers open book and then start to do them closed book. Don't feel bad if you look at them while doing a closed exams though - because in the end you're just filling gaps you didn't know before :)