RAM: 8GBx8(32GB)
That's an interesting calculation. 
Assuming you will be able to install and run ESXi on this mainboard, you won't be able to put much workload on it. Memory and CPU may be ok but think about the disk IOPS you need. It's not only the capacity of a HDD that matters , it's also it's throughput. For the scenario you describe, I'd guess you should consider a hardware RAID (1 or 5) with at least 5 disks (SAS 15k). In addition to this, some of the features you mentioned are only possible in a cluster with shared storage.
André