Cloudstack Advanced Network setup

Looking for freelancer that can help us setup cloud on very short notice. We have cloudstack running already in basic networking mode. What I'd like to accomplish: Have every VM running on a guest IP; Be able to attach a public IP to a VM (like elastic IP's in Amazon EC2); Current method of load balancing is Nginx - so I want to be able to have a VM with Nginx and a public IP and then use guest IP's as upstream sources; Offer clients the VPN/Loadbalancing option - this is for clients who want to clickety-click add an LB (we do Nginx for our own stuff); Rather sooner than later :); Question: do we have to put each seperate account into a VLAN? Note: in my image you'll see that the control boxes have no direct internet connection. They use a Linux box as their default gateway.