Reverse bidding system RBS Cogzidel - open to bidding

Project Description: I want to use a Cogzidel RBS script for my freelance site. But not for programmers only for Buyer and contractors in Industrie same "My Contractor" or My Hammer" This software is licensed under the CC-GNU GPL. Kindly take a look at the adjustments that must be made: 1) complete new fresh template - web 2.0 look and feel (like odesk or elance wtih) 2) add new search function - refine and categorize buyer and provider by "country", "skills", "budget", "agency or freelance", "review" etc 3) site must be seo friendly - posted projects must be crawled by search engines Keywords ect. management from administrator panel. 4) Joomla CMS integration if possible - ability to add or adjust pages/images/content/text in adminpanel 5) buyer/provider must be able to login at both account with 1 emailadress/username/captcha 6) provider must be able to select a co worker/ partner/provider (like odesk and elance) or repost a part of the project as buyer 7) install RBS Payment Module add on (google check out, moneybookers). 8) content adjustment: text buyer and provider must be replaced, the footer must be clean (no powered or designed by etc) - I wil PM you the content adjustment 9) 100 % bug free! 10) installation at my domainname 11) Multilanguage support with flags or checkbox on main page need (Not google translate) only over language files managed from admin panel. I am looking for an experienced longterm partner who can take care of the monthly update and upgrade of the site.