Hi
Greetings!
What you are looking for I have already made and installed it in many of our website. This is a plugin by my team and we are looking to extend it with more functionality in future.
It let you publish automatically from your blog to 5 leading social media networks like Facebook, Twitter, Google+, Pinterest, Linkedin. Sooner will come on Tumblr, FriendFeed, Delicious,BufferApp.
A QUICK LOOK ON FEATURES:
# Publish message to Facebook with image
# Attach post or share link to Facebook
# Publish to Twitter with image
# Publish to LinkedIn with image
# Enable or disable wordpress page publishing
# Customizable message formats for Twitter, LinkedIn and Facebook
FILTER SETTINGS
The plugin offers multiple kinds of filters for contents to be published automatically.
# Enable or disable publishing of wordpress pages
# Filter posts to be published based on categories
# Filtering based on custom post types
MESSAGE FORMAT SETTINGS
# Separate message format for Facebook, Twitter and LinkedIn
# Supports post title, description, excerpt, permalink, blog title and user nicename
POSTING OPTION
# Attach post to Facebook
# Share link on Facebook
# Post to specific pages on Facebook
# Post to Pinterest, LinkedIn, Twitter, Google+, Facebook with image
This is in itself a sellebale product your cost is super low to get it. We are proudly maintaining 95% completion ratio with 5/5. if you have any concern i would love to assist you.
Warm Regards
Pradhuman