Codeignighter script needs some modifications and redesign

I have a website which runs a script coded in codeignighter, i need some new features with a redesign.

Here is what i need :

Comment System : (Add features to already in place comment system)

1. Ability to add reply to comments. Comments should be visible to everyone but only members should be able to comment and reply.

2. Ability to moderate comments (Moderators and Admin only).

Member System :

1. Ability to send and receive private messages, between friends only.

2. Ability to add friends.

3. Ability to add Profile pictures.

4. Ability to invite people to join.

5. Ability to suggest posts to added friends.

6. Ajax or instant message notification.

7. Ability to post messages or anything on profile timeline or wall posts.

Website General

1. Create or merge an existing forum with single username.

2. Live chat box.

3. Rating and points for posting comments and links. Rewards.

4. Ability to blacklist anyone for spamming and abuse.

Please PM for more info.

AJAX Codeigniter jQuery / Prototype PHP

Project ID: #5262049

About the project