That should do it. We just did this 2 months ago. When we checked in at GSO, our passports were swiped and confirmed....out printed our boarding passes. We did not have to do anything else when we transferred in SFO to the SYD flight. The electronic visa is good for one year.
As you are probably aware, the Intl RCC at SFO is wonderful. If you have a chance, hang out there.