We are traveling through Sydney (United) and then onto to Fiji (Virgin Australia). United flight is set to arrive at 7am and Virgin flight to Nadi, Fiji is at 8:30am. Is this reasonable for an international transfer within the same terminal, T1? Are there any VIP meet and greet services that can help with the transfer?

Please help! We've never been through SYD before and have no idea what to expect.