Hopefully you wil get assistance for your kids ,if $50-60k then you will be clearing maybe $8-900 a week, rent will be at least half that if you are renting , food prob $300 a week ,bills at least $100 a week ,petrol/travel another $75 a week so there is your wages gone already ,this is just facts & not meant to worry you ,personally id say a family would need at least double what you maybe earning to live ok ,not well off by any stretch of the imagination, if you can buy a house outright ,then you should be able to manage