using Ubuntu Cloud-Images with Proxmox?

The current method I use to create VMs in Proxmox is very time consuming. I'd like to see if I can use Ubuntu's Cloud-Image to speed up the process of creating new VMs. Does anyone have any experience with this?

Right now, I base my VMs on Ubuntu and KVM. First I upload the ubuntu ISO, run through an install using the GUI console and then convert that install into a template. When I create a new VM I need to boot the VM, ssh in and manually set the network for the VM. This is rather time consuming.

The Ubuntu cloud images are a preinstalled version of Ubuntu but without any network settings. But they support cloud-init (http://cloudinit.readthedocs.org/) and this blog post (http://ubuntu-smoser.blogspot.ca/201...out-cloud.html) shows how to base a VM on the Ubuntu Cloud-Image and then create a CD with genisoimage with the cloud-init settings for the VM. When the VMs boots, it will read the settings from the CD.

My plan is to create a VM with ProxMox and then replace the disk file with the Ubuntu cloud image. And then to replace the CD image with the ISO I created with the cloud-init settings.

Original conf file
virtio0: local:100/base-100-disk-1.raw,format=raw,size=40G
ide2: local:iso/ubuntu-12.04-server-amd64.iso,media=cdrom

Update file
virtio0: local:100/ubuntu-cloudimage.raw,format=raw,size=40G
ide2: local:iso/my-cloudinit-settings.iso,media=cdrom

Am I on the right track? Has anyone done this before?