ASUS dual socket WS MB. MAXIMUM memory off of the ASUS QVL list, Intel CPU (Xeon E7-8893), Green GPUs, Seasonic PSU, X7 (although Nvidia audio is really coming up in the world), full line level audio including mixer (prefer Yamaha) and tuner (also Yamaha), dual 8TB HGST He SAS HDDs, dual Samsung 850 Pro 2TB SSDs, Corsair Obsidian Case (note the SSDs have a mount built in BEHIND the MB), 100 GB BluRay DVD burner (plus RW BluRay DVDs), Samsung display(s), LSI SAS Controller card, external SAS bay w/ Seasonic PSU.
BTW, if you are actually insane enough to build this then I suggest you call Puget Systems in Auburn WA. Puget Systems will custom build the system to your specs and they will issue lifetime free labor on upgrades and warranty work.
It will cost you though.