Removing and Adding Hyper-V node to cluster

Guys,

have unique requirement of making few hyper-v hosts as a cold standaby host which can be bring back to life if needed such as another node has died.

How practical is to remove a node from cluster, shut it down, when needed start the hosts, readd to domain and add back to cluster? 

Or just shut it down and start every 30 days to keep it intact in the domain?

Have 5 nodes cluster right now and have enough resource to run all the workload even if one of the node is down (apart from the one I want to keep as cold standby)