[Plugin: Head Cleaner] what to enable?

Hello, please give a look to this site.

I have configured the following options:
http://img560.imageshack.us/img560/4760/unlededp.png

According to the speed test on http://www.webpagetest.org/ the side loads in 12-13 seconds (european servers – the nearest).

What should I do?

http://wordpress.org/extend/plugins/head-cleaner/