40-45 still possible?

[moho65]

I'm currently in year 12 and my subjects are -
Further: average around 93%, rank is about 15/120
Methods: average- 84 %, rank is 9/67
Chemistry: average is 84% as well and rank is 12/58
English (EAL): average is 87% and i'm rank 1/12
physics: average is about 81% and rank 11/35
and I did biology last year and got 33 study score
our cohort is an extremely strong one, our sacs are quite difficult (a little bit harder than the exams), that's why my averages are quite low. I need to get about 40's in all my subjects and about a 45 in further, is this possible considering my bad sac averages? i really believe i could achieve a minimum of about 85% on each of my exams. (I say that in the most modest way possible)
thank you, 

[abcdqdxD]

I need to get about 40's in all my subjects and about a 45 in further, is this possible considering my bad sac averages?

yes