Squarespace expert to add social media sharing to specific images

My squarespace website is based on this template: [login to view URL] If you scroll below the title image, you'll see an image of the restaurant adjacent to the "A DESTINATION" header. Click on the image and it will show you a larger image. Here is another squarespace website template I am considering to use: [login to view URL] Click on any of the images and you will see a page showing the images within the respective photo album. I would like any specific image on my website, regardless which template I end up using, to be shareable to Facebook, Instagram, Tumblr, and Pinterest, and am looking for an expert to help me with this. I prefer to use pre-existing solutions (e.g.: Addthis, Sharethis, etc.), but am open to using Squarespace's Developer mode to dig into the code if needed. In addition to being able to add sharing functionality to individual images throughout the website, I need to be able to allow any visitor to easily connect to our company's Facebook, Instagram, Tumblr, and Pinterest account (e.g. add us as a friend or fan)