I actually started practice exams during January

Memorising will definitely help, but understanding the concepts is much more effective. Looking at the 2010 exam (FIFO question -.-), it definitely seems that VCAA will be assessing students understanding rather than just their ability to memorise and spit out pre-learned answers.
Aim to do as many exams as possible. Much of VCE Accounting is about practice. Have a go at the different study guides on the market.
Your plan is definitely more than adequate. But to guarantee a score above 45, you need to do more than everyone else. So that could mean doing extra practice exams, making notes etc.
The notes I'm making right now are for someone else. I didn't really use notes for accounting. I mainly kept a really detailed record of all the exams I did and the mistakes, errors etc.