Custom Press mass import

Hi,

I am porting an animal shelter web site to a Wordpress CMS. There is an existing database of animals I need to import with a custom fields for the animals. I am thinking of using Custompress and making each animal a post with custom fields. The alternative though was to make each animal a user with custom fields. Would Custompress be a good fit and if I go that route is there an easy way to do a mas import form a .CSV file or simila to import the existing database.

Thanks Martin