Be aware that if you have HELP/HECS debt you may end up owing at the end of the financial year if you dont pay extra towards it through out the year. I have had this happen and so have other people I know. Its great though I work part time and pay minimal tax. When renting I SS toeards bills and now I SS towards our mortgage

Also it will be taken into account when you claim family assistance as while SS is not considered part of your taxable income it is counted towards your assessable income for payments

Definitely worth a quick chat with your accountant to make sure you have all your bases covered but I don't know many situations where you wouldnt be better off without it, you just need to make sure you consider all the other implications of it. You can also SS extra super contributions on top of your max SS amount