in short... but there's a very good how to paper about business content on SDN...try to search for it...
best practices would be to activate infoobjects and datasources and copy the cubes/dso's to a Z object.
you should first determine which cube you would need for the future reporting. at this point you can list the infoobjects that are in the cube and the datasources needed to load the data to the target.
only activate the objects you need.
no other settings needed.
BR,
M.