1 You can decide to use Camera slideshow (a free WP plugin developed by me) or, since Enfinity 2.0 the slideshow generator to create responsive slideshows.
2 Enfinity is developed to support WooCommerce (click here) to transform your WordPress website into a thorough-bred online eCommerce store.
3 For the support forum, Enfinity uses BBPress plugin (click here), so the theme is BBPress ready too… the demo version is exactly the same of yours.
Enfinity provides a very extended admin panel. You can have fun with it or, if you prefer, you can import a preset skin.
N.B.: read the documentation.