Which Plugins Should I Use.

I want to create a community using Buddypress where paying members can blog and create events (Events +) and the other option would be a free account where the user would just get a regular buddypress account no blogging or creation of events but are able to attend events and comment on blogs. Which plugins should I use a plugin like pro sites or a membership plugin, should I use multisite?

ps I hoped I posted this in the right category