My first test setup

Hi all,

I have a question regarding setup. I wish to deploy two node HA i have 3 nodes with drac cards and each have 2 nic.
On first there will be clean install with 2x1tb disk, on 2nd I have solusvm and I would transfer my 3 vps's openvz - to proxmox and then Ill install proxmox on 2nd node.

My questions are:
1. any suggestion how to make this happen "the most painfull free way"
2. I have 3rd node too but I plan to leave solusvm there on xen but can I "plug" in 2 more disks and install proxmox as 3rd node there? Or just use it as quorum member? How?
I bought licence for 1st node 2 cpu, so I need 2 more with 2 cpu or how?

Later on I might use 3rd node fully for ceph...is it hard to turn it on or there is no way?
What about if I put 2x2 tb disks in each machine later on?...bit confused. Thanks :)

Thanks a lot for your suggestions.
Regards!