You will definately be able to go to university, dont stress. The career advisors are always shitty and have no idea about the atar estimates. Currently you are looking at a 55~ it all depends on how well you do in externals and how well other people do.. UWS will accept anyone who has done the HSC. Just think about the course you want to do. Its in the schools best interest to make you feel like youre terrible so there marks are boosted and they arent a school rank 600 :L. Try going for a commerce degree at macquarie or UWS. It doesnt matter where you go to university only the degree matters and people and unis understand that the HSC is not an intelligence test.