My advice would be to install XAMPP, LAMPP, or WAMP and test out several candidates and see which are most suitable for your site and also which of them is most easily adapted for admin.
I've tried pretty much every CMS software around -- used movable type for years, built a couple of sites using Joomla, also Drupal, but for my money Wordpress is easiest to set up, administer, and use.
Still, you should give 'em all a shot and see which, if any, turn you off immediately etc. etc.