MCSA Electives

I need to take an elective to complete my MCSA requirement. I am thinking taking either 70-299(Implementing and Administering Security in a Microsoft Windows Server 2003 Network) or 70-431(SQL Server 2005 – Implementation and Maintenance). I am attending attending Microsoft institution taking classes for 70-270, 70-290 and 70-291. Please, will those classes (70-270, 70-290 and 70-291) help me prepare for 70-299 or just give 70-431 a try