14145 affiliate and ebook sales php

I am selling an eBook. I have a few scripts that seem not work well together. I want to use paypal to charge users for my eBook. I want to have affiliate tracking, affiliate signup page, and statistics for payment to affilaites. Once order is compeleted affiliate statistics are updated and affiliate is emailed of order, admin is emailed of order, and user who bought eBook gets email with user name and password and link where they go to login and download eBook or other digital files. There should be a limit to the # of times a user can download and only 1 ip is allowed for that user. make this adjust in the admin side so I might raise to 2 ips. This is what I need - if you have experience or script like this already I will pick you today! Thanks Patrick