Hah nah, I'm only doing 1/2 right now. I'm just hijacking their friend since it seems like no one on AN is doing 1/2 
Anyway, I remember you saying your Chinese school didn't speak Chinese in class but you still managed to pull off a pretty good score. How did you do it?
I didn't actually go to a "Chinese school" I just did Chinese at my day school- where we didn't speak chinese in class because no one would be able to understand what the teacher said if they did haha! I've always liked Chinese as a subject, and thus I put in a lot of effort- iirc I did my general conversation draft in the summer holidays, and memorised my one minute report (basically thanks to Drake for inspiration and proving you don't need to be a chinese background speaker whose talked chinese since they were 2 and go to 新金山 to get 40+). Our school basically focused on the oral all the way until the actual oral exam in October, so that's what I did too, meaning I didn't do any practice essays except for for SACS (so about 4 essays give or take lol). I also watched (or tried to watch) chinese television shows- if you look hard enough on youtube you'll find some, one I liked was 爸爸我们去哪?In hindsight, I would really, really recommend doing consistent preparation for the written as well though (for comparison I lost 30 marks in my written exam), at least try a practice essay every now and then instead of SWOTVACing it after your oral finished.
Honestly if you're this motivated and only doing 1/2 I'm sure you'll be fine! All you need is hard work and practice, which you'll have plenty of time for if you do 3/4 in year 11!
加油!