Can I port a template to wordpress?

Try reviewing Theme Development.

You’ll definitely be able to port your site into WordPress, but will need to create a new Theme if you want to keep your custom look and design. There are many people that help make WordPress themes from static HTML sites. However, you’ll also need to consider what you’ll use for e-commerce.

There’s a whole thread on ecommerce on the support forums so check what others like you are using.

Personally, one of my favorites is Woocommerce by WooThemes.