Could you recommend a WPMS pay-per-site plugin?

I've been browsing through a couple of your awesome plugins, but I'm not sure if I know which i need.

This is going to be a Multisite, where I want to charge monthly use of the subsites. What I need is:
1] enable me to set 14 or 30 day free trial, after 14 days start billing monthly/quarterly/yearly
2] enable payments via PayPal or bank transfer (manually)
3] possibly automatic or manual to-from date setting for the single site to come offline (not delete) if the payment is outstanding or manual date has been reached.
4] payment reminders

Is there a good plugin for this idea?

Cheers, Paul