Depending on the scale and predicted growth of the business, I would probably use one of the commercially supported on-prem solutions that deploys image builds,

Depending on the scale and predicted growth of the business, I would probably use one of the commercially supported on-prem solutions that deploys image builds, manages ILO's, etc.. e.g. rackN, foreman, etc... to guide future employees down a consistent path. I would probably also complement that with Ansible AWX or Ansible Tower for orchestration and run-time configuration changes. I would keep the images really small, simple, up to date and use Ansible to add any service specific packages. Image builds of each service can turn into a massive amount of storage really quick.