The highest one one 
I certainly think a 45 would be realistic if you work super hard. The BM isn't hugely academic, so a 42+ would be like aiming for say a 33 in Chem if my memory of scaling serves me correctly. In comparison to the rest of your aims - BM sticks out as slightly lower
. I'm not sure how strong your English is (I assume it's your second language), but if you're going at it again you could think about bumping it up a bit
- I'm about to read A Christmas Carol now and I'll read Cosi soon and I studied the same Context texts as you did so the only limit you have is the amount of work you're willing to put into it 
That puts it into perspective

Thanks a lot man. I'll definitely revisit my aims this year. If we're gonna be technical, English is my second language

(I was born in India, people around me spoke Tamil. Then we moved to Australia when I was about 6 months). I'm praying for a 40+ but I know it won't come without the effort. I don't want all my predictions to be higher than my results at the end of the year haha. I might look like too much of an optimist... I probably am now

Very much like your situation I think... People will laugh at my aims, give weird faces... and that makes you want to bump it down a little. Maybe if I shut my ears off all the hate I'd be better off

Our context is indeed very interesting, more so because I can relate to the text really well. So I'll use last years experience plus this year to really ramp up that score!
I know ... when i opened the window for scores , i was ecstatic , but they had this disappointed look on their face.
. :0 gahh why cant parents understand
? ?? !!
That would either really put me down, or make me infuriated with my parents to be honest. They should be supportive instead of always thinking "what if"... Maybe it's in their blood

I didn't go so well this year but my mum said "It's okay, now you know how much effort you need to put in next year to avoid such situations.." That's exactly what I want to hear, and it makes me want to study even more.
TL/DR
My parents are awesome <3