BuddyPress.org

I am going to redesign a site for a local community organizer. The site they have now is a place where members can come and post their information. There are 4 groups (churches, businesses, individuals and community partners).

New member (a church, business, etc) would sign up on a form and then are approved by the owner of the site.

Once the new member’s profile has been formed the new member should be able to:
• To create sub-groups.
• To have other members join their profile (for example if a member of a church wanted to join it’s church’s profile).
• Members will not have access until the Member is approved

I was looking for options to do this and buddypress seemed like the easiest.
The site is located here:
http://www.overgroundrr.com/index.php?option=com_frontpage&Itemid=1
Basically I want to replicate this functionality.

Thanks in advance for your help.