If you want your client to have the same kind of interaction and ability to update his site in the way that he has been with Blogger then you need to create it with a platform that he can use. WordPress is a good CMS because it is not that hard to learn and has a great and friendly user community.
I’ve converted all of my static sites to CMS sites (WordPress, Joomla, Drupal) so they can be maintained by their owners. There are themes for WordPress that help make it a bit easier to match and customize your site (Weaver II is one of them).
You can create a site using WordPress that has static Pages and the Blog (the part you’d import from Blogger).
You could also just keep parts of the site static and convert just his blog to WordPress and menu link to it from the static pages.