WordPress-based FaceBook Custom Tab

We are looking for someone to create a Facebook Custom Tab based on Wordpress. (e.g. with FacebookIFramePro) The site should have top navigation (main + different geographical regions) and have the following features: - Postings are structured data (art exhibitions) and will be listed by 1. country/state 2. city within the selected navi tab. User can change sorting criteria. Possibility to jump to respective country/state in the list. - Postings will be published automatically on the wall of the FaceBook Page, on our Google+ Page, Twitter. - The venue of a posting (exhibition) should be connected to Foursquare (our Page / added to our list for the respective geographical region), if possible automatically. - Postings are hidden automatically after their respective "end date". Further ideas are welcome, yet we want to keep the site "easy to use". Please indicate in particular to what degree you think the Foursquare linking can be automated.