What does DBA do right after SQL Server installation?

What usually does an experienced DBA do after installation of SQL Server?

Here is the list by my best knowledge,

Step 1: Install the Service Pack, Hotfixes and Cumulative Updates

Step 2: Configure SQL Services
SSCM(SQL Server Configuration Manager)
Services started?
Which account to start the service?
Restart Service on SQL Server and SQL Agent

Step 3: Configure Default Directories
Should be done in installation

Step 4: Configure Default Database Properties
Step 5: Configure tempdb Database
Step 6: Instance Level config
Configuring Parameter Values
Configuring SQL Server Network
Step 7: Configure Security
Step 8: Configure Error Logs
Step 9: DB mail
Step 10: SQL Agent
Job History Size