Optimize creature of single Klever experimental instance
As far as I understand nobody creates Klever experimental instances for performing actual large experiments. Most likely this is related with #9064 (developer instances look like experimental ones). Since soon that issue will be fixed everybody will have to create Klever experimental instances at last. Often one will need to create a single instance of this kind at a time, but at the moment this use case is suboptimal since an intermediate instance and image are created before running Klever experimental instances.