It doesn’t matter but the hardware is a Dell r210ii with 16gb of RAM.
Installed the Dell ESXi image from the Dell website.
WinSCP to move DrDonk’s Unlocker v2.1 to a datastore and ran the ESXi installer included.
Downloaded High Sierra on a Mac using the App Store and made an ISO using instructions found online.
Installed ISO - went without a hitch.
Downloaded VMWare tools from VMWare website. Used latest version (10.1). Dug darwin.iso out of the zip file and installed the macOS tools. This enabled changing screen resolution.
Everything is working perfectly, no problems so far.