Renting account info (user pays for access to info)

I’m trying to think of a way to rent account information to new subscribers.

I know I could completely automate this with something like WHMCS but I want to try a different approach, maybe there is something I could use for free or integrate?

For example

I would manually set up 5 stream hosting accounts and store the info somewhere safe, preferably not in wordpress, customer can go through checkout process on my site and pay for a stream hosting account via PayPal or Stripe, then the info would be either sent to the customer’s email or/and they would get access to a page with their new stream account info.

It would be cool to have a wall of plans, when someone rents one, that plan would display as rented on the wall, so other users would see it’s rented, they would just how to pick another plan on the wall that says available for rent.

The system would take care of the subscription time etc. I’d just reset the stream account if the customer didn’t renew on time, maybe it would have a grace period. Admin and customer would get email reminders.

Any ideas appreciated.