I've been literally trying out various plugins (or maybe i'm not testing them correctly) that could help me with:

1. Member registration
2. Custom Profile page
3. Custom control panel

I'm planning to build a site where I offer cash back for every sale. In order for this to work, the user would have to register, choose from a drop down of merchants, enter the email, username and whatever.

Upon confirmation the admin would add the merchant name, and other details.

End of 30 days, the user would be able to see the points accrued and would request a cash out.

Upon processing the payments the admin would update the payment field as processed.

Is there any wp plugin or scrip that can do the above?

Thanks in advance