[PAID] Customization / Plugin development

I am looking for a developer for customization of development of plugins to achieve a forum outlined below.

Please provide price(s) and time required to do the work.

Short Description
A forum for users to discuss issues in their locality
Free User signs up for and can only post in a specific locality, that is Country or Country->State (in the case of US, Canada, Australia, South Africa,etc).
Premium User signs up for and can only post in a specific locality AND a limited of categories/subcategories, for example, up to four of categories/subcategories in his/her country.
Users can view posts throughout the forum

Free Users
They do not pay any fee
They can create new questions/topics
They can edit their own questions/topics and replies
They have less space than Premium Users to write
They can rate answers given by Premium User to their questions, say out of 10
They can rate answers given by Premium User to questions by other Free Users
They can post in any category in his/her country

Premium Users
They pay a monthly subscription fee otherwise they default to Free User
They select subcategories in which they can reply to posts
They can answer questions/posts only in the subcategory they selected
They have more writing space than free users
They can answer questions posted by Free Users
They can edit their replies
They cannot make a new question/topic/post
Cannot rate answers, whether theirs or of other Premium users
Multiple levels of premium membership, say 10
Trial period for premium membership

Other/Guest/Anonymous Users
They do not have accounts
They cannot do anything except to read topics and replies

Payment Gateways
2Checkout
Offline (cash/bank check) payments
PayPal

Statistics
In addition to the statistics provided by Discourse core:

Total number of users
Number of users per country
Number of users per state/province

Total number of posts per period (per day, week, month, year)
Number of posts per country (per day, week, month, year)
Number of posts per state/province (per day, week, month, year)

Total number of questions sent to Premium User
Total number of questions answered by Premium User
% of questions answered by Premium User
Average rating of Premium User

Total number of questions sent by Free User
Total number of questions of Free User that received answer
% of questions of Free User that received answer
Average rating given by Free User

All the parameters should adjustable by forum admin

Thanks
Shepherd

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