Redirect to SourceCoast SCLogin

I would like to require all of the visitors to my site be register to read the blogs. I have that set in the configuration. When they click on a blog title they are correctly redirected to my site's Joomla registration / log in page.

However, I have Source Coast SCLogin installed on my system so people can log in / register with their Facebook, Google, Twitter or Linked In accounts and when a non registered user clicks on a blog title, they go to the Joomla log in page where there is no option to log in / register with any of the social media credentials.

How can I set it up so that the Source Coast SCLogin with the social media options is the login of choice?

Please don't make any modifications to my site. Please let me know what my options are.

Thanks.