To apply as a non-standard applicant, you need GPA and UCAT. Do you use the GPA for the first semester of uni or the final-end of the year gpa?
It depends on where you're applying to as to whether GPA, ATAR or a combination of both will be used. That said, if you've done a full year of Uni, those that actually use GPA will use your final-end of year GPA (with the exception of WSU which will use your ATAR if it's high enough and your GPA isn't or vice versa).