We want to launch a site as a clone of this website: [url removed, login to view] .
You can consider it as a model for your requirements with the same features/applications in front end and back end.
So study this site deeply.
We want to have it in 2 languages: english, Italian(we traslate your lang files)Spanish, portoguese but we must be able to being traslated in more languages with a Lang files.
We want also included a SEO job to this site, search engines subscription in order to start having a good ranking( in Google and Yahoo)at the starting time.
Don't bid if you not have enough skills.