Thanks for the tip about the vmx version - I didn't need the to add the floppy because, the vCenter Standalone Converter has an option for Hardware Compatibilty "Virtual Machine Version - dropdown" before you push it up. - I had been choosing the newest version before.
NOTES - For anyone needing help with this issue (Also see attached images):
I opened the ova in VMware Workstation v.12 -Saw that it defaulted to a version 6.5-7x virtual machine when I chose manage -> change hardware compatibility - see image
Then I used Stand Alone Coverter - chose Convert Machine option - and navigated to the Workstation's VM folder (You need the vmx which is why I opened it in Workstation) - to push it up to my ESXi 6.5 host.
Before I pushed it, I made sure to select version 7 from the Virtual Machine Version dropdown.
ALSO NOTE:
The Simulator image comes with 4 Drives attached and they're all THICK provisioned.
One of those drives is 230GB - So you might have to set it to thin provisioned based on your environment - because your host storage may not have room for all 230GB to be thick provisioned.
Again - The standalone converter gives you the option to edit the VM's parameters before pushing it up so you can switch.