Webontwikkelaar gezocht met enige ervaring omtrent het opzetten van een peer-2-peer marketplace

Toelichting op de werkzaamheden
Ik zoek een webontwikkelaar met enige ervaring omtrent het opzetten van een peer-2-peer marketplace.
Het idee is in Amerika al in uitvoering: kitchit.com.
De gewenste website komt hier voor een groot deel mee overeen.

Ik ontvang graag een +- bod voor het ontwikkelen van zo'n dergelijk systeem.
Mijn vaste ontwikkelaar heeft toch te weinig kennis hiervan, dus hierbij de uitgebreidere prijsaanvraag in het Engels:

I would like to get a rough estimate. A more detailed description is in development. Suggestions are very welcome.

Estimates for:

1. A plugin Wordpress / Woocommerce / Magento (whatever is best)
2. A website from scratch
3. A plugin combination + adjustments

The goal:

Summary:
A website where Chefs can create menus and sell these menus to clients. The chef will cook or deliver the menu at the location of the client at a specific date.
Client searches menu ? chooses menu ? sends inquiry ? chef accepts/edits/declines ? client pays ? chef cooks ? chef receives money commission.

http://kitchit.com is a perfect example of the functionality. (frontend)

Client journey:
1. Searches for menus by: location, amount of people, price and category
2. Select a menu and view the content & reviews
3. Send an enquiry; location, amount of people, price (calculated for amount of people)
4. Receive an accepted or edited order by the chef.
5. Pays via checkout.

Chef journey:
1. Registers on website: name etc., location and availability calendar (corresponds with all menus)
2. Sets up menus with variables: base price, menu price (per person), extra variables (e.g. wine per person), text, images, range (4-50 people). (All menus have same location and calendar )
3. Receives enquires: Accept, Edit or Decline order with message.
4. Receives confirmed order.
5. Gets paid afterwards.

Admin:
1. Can see all enquirys, orders + messages and has to approve menus after submission
2. Change edit content on site, like a normal CMS

Requirements

Functional pages to deliver:

Search page / home page: search location -> show menus in range of that location
Shop page: sort on location, amount of people, price, categories
Chef page: show chef, about chef, his menus, his reviews
Menu page: show price, details, chef picture, pictures, reviews, datepicker, variable prices + calculation, submit form

Settings chef: edit menu, new menu, enquiries, edit info
Edit menu: edit prices, photos, content, categories, submit for review button
New menu: same as edit
Enquiries: list of enquiries which can be accepted, edited or declined. + list of paid enquiries
Edit chef info: Edit name etc. , about info, photo, background photo, location + range location, availability date picker ( to show in all menus)

Settings client: edit info , enquiries
Edit info: name, etc.
Enquiries: Send, Accepted, Declined, Paid or upcoming / past events

Payment gateways: iDeal (Woocommerce can handle this) and paypal

Technical options which I found:

My inspiration came from woocommerce bookings + woocommerce vendors + Frontend vendor options of dokan:

http://www.woothemes.com/products/product-vendors/
http://www.woothemes.com/products/woocommerce-bookings/
https://wedevs.com/theme/dokan/

Number one option which I think is the easiest:

Create a plugin extension for woocommerce bookings which can handle frontend creation of bookable products beautifully + lets buyers communicate via enquiries with the chefs. (Dokan style)

+

Customize a theme + woocommerce to meet the other requirements

In this way I maybe can resell the plugin as a multi user frontend service seller for woocommerce.