you can say that, not mention that internal raw marks don't matter cause some people here would look at your advice and decide to not try in their assessment's then wonder why their atar is shit and do not forget that the atar is a average of your internal mark, hsc mark.
How can you say internal raw mark do not matter, then say that your internal rank only matters first make sure you do really well in your internal marks so even if you do not get first your marks won't ever disappoint with you
only put a laughing emoji there cause i seen the same posts from smart people thinking their atar is going to be shit, when they see their atar it beats their expectations. Op has nothing to worry about