Just go to Monash if you're scared of not hitting the requirements for a Masters spot for CSP, lol.
Honestly, this is legit advice, it's not even a burn.
The best thing to do when choosing uni selections is to aim to get into the thing you want *straight off the bat*.
This applies to law, medicine, engineering, education and so on. It is best to get in for your first degree then you know you'll have an engineering degree.
Waiting for masters is always somewhat of a gamble. Some people totally drop the ball (yes even kids who scored like 95+) come uni, i've seen it happen every year i've been here (and i've been here awhile).
The competition might surge and become very intense in any one particular year. You're also not competing with only VCE kids anymore, you have far more competition from international students, interstate students, adults from the workforce reskilling and so on.
I dont mean to play it down or make it seem glum, plenty of people make it work and get in obviously. However, if you do go through the masters route, there is a gamble involved.