Multiple Networks On One Wordpress MU Install

What Plugins do yall have that will do this or one that works with yalls plugins. Once I can get Ultimatum Theme Devs to fix the issue with Buddypress using my own Layout instead of the default layout for my Template I am wanting to create multiple networks on my main site. I also want to make it where when a username is picked for Registration certain blogs not allow same Username to choose from but some blogs to allow it. I want to make buddypress community and WooCommerce (since I use Ultimatum Theme) Store for each network and sometimes for those two things being seperate blog for that network.