I want a profissional design with CMS

General information for the website: Software
Kind of development: New website from scratch
Description of requirements/features: I want to be able to modify all images and text using the control panel
Specific technologies required: word press or joomla
Similar urls: http://www.satl.biz/index.php
Extra notes: General information for the website: Software reseller
Kind of development: New website from scratch
Description of every page/module: I want to use a CMS like wordpress or Joomla, and I want it to looks like this website including the pictures and the content:
http://www.satl.biz/index.php
Description of requirements/features: you will have to use the same pictures and text in the new CMS so I can modify the text later.
all the used pictures should be in high resolution
loading should be fast.

we will use the template on our own hosting server
CMS and Admin requirements: wordpress or joomla
Extra notes: