Given this information, I believe that your performance is consistent with an ATAR ranging from 92 to 94. Your position in Business Studies, English Advanced and Latin Extension likely indicates that these subjects will make a positive contribution to your ATAR. Because of this, it is important to remain determined in terms of your preparations for your HSC exams, so that you can maintain this level of performance and consequently maximise your ATAR.
Since your performance in Latin Extension appears to be of a very high standard, I would assume that this also applies to Latin Continuers, meaning that your lowest performing subject in this case would be History Extension. Based on this, you may wish to consider placing additional focus on your preparations for your History Extension HSC exam, which will hopefully allow you to achieve the highest possible Examination Mark.
Of course, depending on your overall performance in your HSC exams, you could potentially exceed such estimates.