Im 20 yo and buying a house for 275k AUSSIE$?

is there much i should be aware of? I make 52k a year very secure job with the possibility of becoming partner in a business that will generate approx 500K (on the small side) a year. ive watch property markets closely since i was 15 so i know what im buy and where im buying it. the contract atm is subject to building and pest inspection and finance. Finance should be guaranteed no debts and a strong savings record, with the gov. bonus of 14k i should have 30k deposit. as well as, wealthy guarantors. any other advice is wanted? if you have any tips about buying or selling property it would be muchly appreciated if you could let me in on them. thx a million in advance.
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You'd be better off getting advice from your solicitor or conveyencer, especially if you're looking for legal or financial advice. Presumably you've appointed a solicitor after having your offer accepted?
A slight hitch I can see is your age if you haven't yet had your mortgage confirmed - despite having no debts, some lenders are edgy about lending to young people on the basis that they haven't had a lot of time to prove themselves credit-worthy.

My only mantras for buying a new property are be nice to your new neighbours, have fun painting the walls and see your house as somewhere to live rather than a cash-cow. They've always done me right.