Best Plugin combination for Free Buddypress and paid member sites

Can anyone tell me the best Plugin combination and Configuration, to setup a Free Buddypress system that also offers paid member sites, using Multisite. I have a multisite with Buddypress setup now. But, I'm finding it tough to setup a paid blog, or maybe even a free blog that is very limited. I'm not sure what the possibilities are. But, I don't want to offer blogging communities, just blogs, that are all connected to the Buddypress community site.

I've been trying Supporter, which seems like the right choice, but not quite.

I hope that all makes sense.

Thanks for any help I can get.