Better not ESXi, and hyper-v. You are just in free ESXi license will be noticeable, but under hyper-v You will have a plus — excellent integration with win2008R2.
Prahu, however, did not run under hyper-V. But I have it on centOS substituted for such.
As a result, in 30K it is possible to meet, because the domain does not require a particularly the gateway too. And hyper-v will pull any hardware, unlike ESXi, which list much already.
If ESXi still, then take a motherboard from Intel and ESXi with her well get along.
Iron is best to check for compatibility on the vmware site in advance.