I'm not doing psych at Monash, but I have a friend who is in her Psychology honours year and I have done some uni psych.
The stats really aren't that bad. It's a course for people who don't like statistics, basically. In first year what you learn in research methods is very similar to VCE psychology research methods, except it goes a little bit further in that you lean about the chi square. As far as the maths goes, it's heaps easier than say, the probability stuff expected for year 12 maths methods. You will have to know how to take expected values, a mean, a median and a mode as well as analyse a correlation graph. Nothing too difficult there. What is of interest is that you understand the concepts and how to apply them to psychology, not so much actually using them.
It gets trickier later on though. Apparently honours is very statsy and you certainly have to calculate stuff before honours too. But by this stage you should be able to do it. The problem will probably be that you'd find it annoying rather than very difficult. However, if you do find it difficult help will be out there.
It your genuinely interested by psych, don't get put off by the statistics. They are a very important part of the experimentation process, but there is more to it than that and I'm sure the statistics won't be beyond your ability. Research reports are a pain to write up, and you'll be writing up a hell of a lot of them if you do a psych degree, but you'll also learn a lot of neat stuff about the brain and human behaviour. Also, if you don't plan to work as an academic psychologist, then statistics will hardly matter at all after university.