Well with your savings (10k) and the baby bonus also the same amount $20,000 puts you with a better base deposit...

Coming from a real estate family... It's better to have a bigger deposit and I think the stamp duty is reduced or free on first home buyers homes, I'm not sure if there is a grant though anymore...

Home advertised price is ale ays higher than they will accept. So if you look at a place for $300,000 you would make a first offer of 265,000 and it would probably be accepted. Keep this in mind when looking, you can always negotiate, and you'd be surprised by how much