What do you think of a self-hosted cloud collaboration platform as a theme on WordPress.

It’s an old project, initially I wanted to launch a service SAAS, but these days I started again to work on it, but now I want to be something self hosted. I want to develop a self hosted collaboration cloud platform, like bs-solution

I’m undecided … I want to make it run with Wordpress platform like a theme + plugins, or to make a platform and put it on Codecanyon . My question is : What would you choose to buy an application that runs on Wordpress or an individual application based on a PHP framework ?