advice math methods unit 3 & 4

[Zahta]

how much chapters is good to be ahead , like four  in the essentials book methods unit 3 4

[Zahta]

yeah im thinking of doing 4 to 5 chapters , so i can be ahead but also get a very good mark with my sacs. im aiming for a 35 in methods not scaled. Im not very good at methods i average  b's this year. So i need all the help i can get.
ALso by any chance do you know what the first sac is going to be on like what chapters.


Thanks for the advice , i appreciate it.