Hi John,
The premium version has a header widget area that you could add the cart to, unfortunately the free version does not. One simple option would be to make your topbar the same color as your header then add css to decrease the header height. Something like this:
.topclass {
margin-bottom: -20px;
}
Another option would be to add your cart as a menu item in your primary menu. This tutorial explains adding icons to your menu- http://www.kadencethemes.com/add-icons-to-your-menu-virtue-theme/
Hope one of those works for you!
Hannah