Advice on suburbs south Newcastle/ north central coast?

Hi I am looking to relocate from Melbourne to Newcastle/ central coast. I am looking on advice for the best suburbs to buy a home within the south Newcastle and the north central coast regions. We are a family of four, kids aged 1 and 2 so are looking for family friendly with good schools/ childcare facilities. We want to be as close to the beach as possible. Budget is up to $700k and are hoping for 3-4 bedrooms but happy to renovate. Any advice would be great.