will this YAK add-on, AND YAK itself work with V3.5?

will this YAK add-on, AND YAK itself work with WP V3.5? I already have an authorize.net account, and I want to make my website http://www.virginiarealtorsmls.com an eCommerce site in the respect that I want to sell a few services. Only 4 or 5. WHAT EXACTLY do I need to do this? YAK and this YAK add-on? Thanks!!!! Please try to answer BOTH of my questions. Thanks 🙂

http://wordpress.org/extend/plugins/yak-ext-authorizenet/