Internal transfers are straightforward enough, just meet the required GPA/WAM, its generally a Distinction avg. so you should be able to get it by the end of 1st year without too much trouble. I'm doing Int studies too but at unsw. You might wanna look into bonus points too, i got them for UTS Business and unsw int. studies and got the offers too and my ATAR was only 90.70 too.
Oh and depending on the uni, internal transfers are waaaay easier than externals. At some Uni's they don't even consider your ATAR and just go by your tertiary marks instead like at unsw, hence why its possible to get into law from arts with say an 85 ATAR.