PXE boot to the K2000 using EFI in VSphere
Community Chosen Answer
--I can't Edit my original Answer--
So I decided to spin up an Ubuntu 14 VM, and installed that ISC DHCP, got it working for both Legacy and UEFI at the same time. :)
Tested with VMWare devices, BIOS and EFI, all good. KACE SDA version 6.x.
Here is my conf file, I will write up an Article about it: