Revamp Existing Website -- 2

We have a cusotmized php/mysql magazine website with over 3,000 articles, 10,000 profiles, 2000 pictures, 2,000 embeded videos, 5,000 photos It also hosts a customized Events calendar (free user driven), Classifieds section (paid user driven), banner ad system We would like to move to a 1. standardized content management system (articles, photos, videos, fb comments) 2. new banner advertising platform 3. profile/email system 4. new professional theme 5. new classifieds section 6. new events calendar we need a programmer to implement the above (NOT to program or create from scratch but to leverage existing successful standard platforms), connect all of the platforms into one, and create an approach transfer of the existing data Programmers should have experience in building/working with successful websites that utilize all of the above items