Urgent Configuration Question

Hi @intoxstudio
Can you please let me know the best way to configure this:

I have 90 dedicated wordpress pages, and growing. Each page a paid user can have access to depending if he bought access to that particular page.

E.g.
User A pays to access Page 1, 5, 90
User B pays to access Page 45, 33, 90, 77

What is the best way to set this security configuration up in your plugin? Create 90+ security groups for each page and add users to each security group? Or something easier?

Secondly, is their away to create a structure that will allow a group or users to have e.g. 1 week to see certain content for a level and than automatically after 1 week to cancel it? Sort of a week teaser on content?

Hope you can answer quickly. Thanks for the assistance.