affordance - A button with a link: understandable or confusing?

I'm working on a design of a touchscreen version of some web application. Since it's a touchscreen I would like all clickable elements to be rather big and easy to tap (it's a simple kiosk, so multi-touch and zoom wouldn't work).

The standard hyperlink is well recognizable but rather small:

The button could be much bigger:

But the problem is that usually buttons are used for some actions and links for navigation. And than I thought: what if I a place a link on a button like this:

And if I use such a hybrid for navigation, would it work? Is it a link with a big clickable area around or is it just something confusing and disorienting? What do you think?