Howdy! Welcome to our community of more than 130.000 members devoted to web hosting. This is a great place to get special offers from web hosts and post your own requests or ads. To start posting sign up here. Cheers!
I`m recently did a redesign on the templates website I run. It`s WP powered website, I`ve used a few plugins to get the site running to almost my exact requirements. Although, not used any plugins that you mentioned.
I know of a few download counters, but I don`t think (to my knowledge) that there is any template shop plugin. Maybe try digital download plugins I`ve listed a couple suggestions.
I think the best WordPress forum solution is bbpress , you can download it from WordPress website - wordpress.org/plugins/bbpress .
You can ask someone to create second plugin , because I didn't know such plugin .