Instruction on moving SEPM database to new SQL server

Hi,

We are running SEPM v11 RU7 on WinServer 2003 and Database on SQL Server 2005. We are about to move the database to a new SQL server (2008).

Please advise if the following symantec article is sufficient for the DB migration and the steps on changes in SEPM.

http://www.symantec.com/business/support/index?page=content&id=TECH132761

Also would like to find out how long will it take to complete this migration.

Thank you.