Convert a Template to a Website

Hi guys, I bought a HTML5 template called Dignity: [login to view URL] Everything on the website is good for me except the PORTFOLIO section, which I need totally remade without ruining the website display (including mobile). What I want in the portfolio section? 1) First of all I want smaller thumbnails on the main page (150x150 px) because I will insert more than 150 items; 2) When we click on 1 thumbnail, we should not leave the page but we should go into a zone where we can see the details: big illustration + info. Something like this would be perfect: [login to view URL]!portfolio-item/[login to view URL] 3) I need to be able to easily add new illustrations just by copy-paste lines of code (and changing images + text, of course). 4) Finally I need for the programmer to insert the social media share buttons. The share buttons should be automatic (they share the illustration that is currently on-screen). Attached you can see a mockup of the portfolio detail section. Please only bid if you are 100% sure you can do this. I have already one bad experience with this exact project, I don't want to lose any more time. I hope I was clear, any question just ask! Thanks so much,