Hey charl I got exactly those scores last year in methods: coursework (A), exam 1 (A+), exam 2 (A+)
I got a study score of 39 with those grades. Wrapping your head around study scores and the grades can be a little tricky especially as the SACs scale differently in each school so try to ask people who did methods previously from your school and asking your teachers will definitely help. For instance one of my friends from a different school had a SAC average of 86% and received an A, but in my case, I managed to get an A with 67%. I've included a couple of scores from people that I know
GA1: B+ GA1: A+
GA2: A GA2: A
GA3: A+ GA3: A+
SS: 38 SS: 42
I personally neglected my SACs and Methods 3/4 as a subject itself (idk what my stupid year 11 brain was thinking) and only actually realised that I needed to do well in it around August so I tried to put everything into studying for the exams. I would recommend starting exam prep as soon as you can when you've finished all the topics.
Aim high and work hard for it! You will not regret hard work.