Transferring Joomla site to root directory

I have a Joomla 2.5 installed in a sub-directory that I wish to transfer to the root (public_html). Below are the steps:

1. Clean up the root directory of all files except cgi-bin
2. Backup SQL db via php-admin
3. Transfer all the files to the root
4. Modify configuration.php esp. variables under $log_path and $tmp_path 

That's it.