To hide the fact using WordPress

Good day.
For future project (topic kupleno) it is necessary to completely hide the usage of WordPress CMS
So in the HTML code was not mention of the standard WP ways to
To change the path in the admin panel
So changed the path to the images and styles

At the same time to set up good security.

Please be aware of the entire task and to provide examples of similar work and cost.
Ideally, to make services check CMS did not define the site as WP.

PS
Please write only those who have done similar things and can talk about performance warranty WP , its correct update and update plug-ins.