We don't know what specific Open Source CMS we should use. SO we will base it on your professional opinion, what ever one will be secure and fast.
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Advanced Features (Excluding basic ones on the PSD design).
Website Header and footer should be static on all pages of the website (Header & Footer, Backing layers held in Background)
Modal login option with username & password (Modal Login on PSD)
Dynamic Search (Google & Site Search) (Header > Search > Site Selection)
Recommended Results on search (Header > Search > Input Focus on PSD)
Mega Dropdown navigation menu with images (Header > Navigation > Rollovers & Dropdowns)
Dynamic slider with four options ( Home > Slider )
Social menu bar on right hand side of window which stays fixed as user scrolls down the page. (Social Bar)
Modal Image (when clicked on loads image at full size) / (Home > Content > Project)
Inner page template with tab menu's (Inner Pages)
Ability to change images through custom framework (Backend of website)
Support for variety of multimedia formats within website > Video, Images, Text, Social Media.
Web Sitemap linking all pages together based around breadcrumb and navigation
Alt, meta tags for images with hyperlinks attached to pages, Text containing hyperlink should underline on mouse Over.
Breadcrumb on Inner pages linking from different home, including categories into tiers.
Gradient Rollovers on Images & Text. Services Bar, Navigation & Buttons.
Triangle Quote button Top left handside to link to Quotation Tool.
i would suggest you to make this site with jooomla. i m an expert web developer and working with joomla+wp from last couple of years. check my work list. thank you
Dear Hiring Manager ,
Good Day
I’m interested in the position of "Converting A PSD to Joomla or Wordpress " you recently posted.i can start immediately. please check pm.