VDP # 5.5.1.356 is available with vSphere 5.5 Essentials+ & above. In this release VDP offers granular backup which means you can select a specific vmdk for backup instead of the whole VM. But CBT is not an option that you choose to turn OFF. VDP enables it on the VM when you create a backup job.
Also, I would recommend a storage provisioning that can leverage hot-add transport mode. VDP use hot-add(transport mode) if available so that you can avoid network traffic. Hot-add operates at storage level and is way much faster than backing up the VM over network.