Configure a Directory listing with sobiPro on a joomla website

General information for the website: NGO's directory
Kind of development: Customization of existing website
Num. of web pages/modules: 5 pages
Description of requirements/features: The directory will have Free & Premium (paid) listings.
The Free listing will have about 6 fields but the Premium listing will have about 30 divided in 4 tabs. (example:http://demo.sobi.pro/joomla-restaurant-guide/71-johnnys-steakhouse)
The site is multilanguage (English, French, German, Italian).
The content will in the original language but will have a “google translate” button. Example: ricardo.ch

Each fieldname will have a ‘Help text’ hidden behind a ‘?’ interrogation mark next to it to help users with filling the fields.(example: Post a Job form on www.peopleperhour.com)

All users will divided in to four groups: visitors, free listing, premium users & Editors. Premium users will also have the permission to access all services (i.e post events, jobs, etc..). Editors will have the rights to edit/delete content.
Extra services needed: Customization, Optimization
Specific technologies required: SobiPro & Joomla
Extra notes: Pls do not apply if you don't have any SobiPro website in your portfolio. It will save you time as well as me.