Hp elitedesk mini cluster

Hi everyone! I am thinking about creating a elitedesk mini g2 (intel g4400t) cluster. I have like 4-5 working unit that i would transform into a cluster.

Has anyone ever done this with these components? Is the g4400t enough?

I would put probably 5 of them into a proxmox/trueNas cluster and then use them as a home lab.

Any idea? Suggestions?

Thank you a lot!