Upgrade process from SQL Server 2000 to SQL Server 2012
No, as I see it, you didn't miss anything. I have upgraded one of my databases from SQL Server 2000 to SQL Server 2012.

Another way is to upgrade the entire server – in this case you can use the upgrade wizard.

UPDATE: my upgrade process was successful, but be careful about discontinued and deprecated features in SQL Server 2008 and 2012.