A note on concourse deployment: their docs recommend bosh deployments, but they also provide standalone binaries [0] and the deployment workflow in this case is extremely simple. Run "concourse web" for the UI, "concourse worker" for a worker, and all the basic connectivity stuff is handled via command line parameters.
That being said, depending on your company habits, the fact that concourse is very opinionated on how to run the jobs (every is built around docker) and how configuration is done (yaml files, no UI) can be either a blessing or a showstopper.