If you're going to making a web site, you'll probably better do with Liferay. Some sites use liferay on the front end and use Alfresco on the backend to store files.
It's possible to delete or deactivate functionalities which you don't need in liferay.
As further information, we use both in our internatl system and have found that Alfresco is still mostly restricted to English language.
The main functionality of CMS is not to store data because it's easier to just store files directly in file system. The required feature of
CMS is the search functionality with permissions. Unfortunately, latest version of Alfresco is still using very old version of Apache Solr.
