If you're taking that approach make sure you shut down the stack before you copy the data over so everything gets copied over consistently (e.g. the DB isn't in the middle of a write), and yes it should pretty much be that easy.
Use rsync to get the bulk of the data over (even if it's mid write) one or more times, then stop the stack on the origin server, and run rsync again. It should be much faster.
If you're taking that approach make sure you shut down the stack before you copy the data over so everything gets copied over consistently (e.g. the DB isn't in the middle of a write), and yes it should pretty much be that easy.
Is there a better approach?
Use rsync to get the bulk of the data over (even if it's mid write) one or more times, then stop the stack on the origin server, and run rsync again. It should be much faster.