it's good to keep in mind that UNSW's TSP is pretty much the same as USyd's SSP, but then TSP at USyd is different, more research-y stuff.
Also, to do TSP maths at UNSW you need 180+ in MX1 and MX2 and to do SSP maths at USyd you need 90+ in MX2 and 98.5+ ATAR.
And you got all of those things...