I want to migrate to HCI and add a third host.  Have added the 10Gbe cards and drives to the 3 target hosts and setup a separate physical network for storage. 

Can I:

- deploy a single-node HCI to host 3

- export the VMs to an NFS export domain

- Import the VMs to the HCI node

- wipe the first 2 hosts and re-deploy them to the HCI DC

or should I just export the VMs, blow away all the nodes, and deploy as a 3-node HCI using the wizards?  I'm hoping to minimize downtime of the VMs to under one day.