Question about these Server components

[Big Head Tech]

So I decided that I am going to build a server.  The idea is maybe to run a virtual machine and test performance on it.  If it holds up close to my rig now, I may dump both mine and my fiancee's rig.  If not, I will just toy with it, maybe turn it into something useful.  I am trying to do this on the cheap but I have a few questions.

 

1. I am looking at LGA 1366 dual socket.  I found this board readily available: http://www.tyan.com/Motherboards_S7012_S7012GM4NR and it supports the 6 core xeon's.  But the fact that it's PCI-E 2.0 x8 worries me.  I own a 980 TI and if it works well, I am gonna grab another one for 2 virtual machines, but will it bottleneck it horribly?
2. Also, I was considering an L series 6 core, do these boards have standard mounting holes for say a low profile noctua cooler?
3. Would a high quality power supply be enough?  Do these boards take special connectors?
4. Many of these boards have onboard raid controllers.  I was thinking about using a 256GB SSD drive for each PC's plus a 128GB for the server, and 4x2TB WD Reds in raid 10.  Would it be able to handle it?
5. Is ram going to be a pain to buy?  Does most ECC/registered server ram work?

This is the board I am eyeing up: http://www.ebay.com/itm/Tyan-S7012GM4NR-S7012GM4NR-B-Dual-Intel-socket-LGA1366-DDR3-motherboard-/331749563091?hash=item4d3dd09ad3:g:6eYAAOSwL7VWj9e0

This is the ram I am eyeing up: http://www.ebay.com/itm/48GB-12x-4GB-PC3-10600R-DDR3-1333MHz-ECC-Reg-Server-Memory-RAM-/141852214578?hash=item21070d0532:g:lggAAOSwu4BV5H1L

These are the processors I am considering: http://www.ebay.com/itm/MATCHED-PAIR-2-Xeon-E5645-12M-Cache-2-40-GHz-5-86-GT-s-Intel-QPI-SLBWZ-/321996004846?hash=item4af8751dee:g:BKwAAOSwpzdWr7i~

 

My plan is to put it into a case that supports SSI EEB if my air 540 won't (supports E-ATX), and run noctua smaller coolers and reference 980 TI's (mine is a nonreference but i'd sell it if this worked).

 

Would this work?

[Streetguru]

6 minutes ago, Snaeb said:

So I decided that I am going to build a server.  The idea is maybe to run a virtual machine

So what exactly is the plan here? GPU passthrough to a virtual machine? Those CPUs aren't going to be particularly fast and would bottleneck a 980ti, also nvidia has some issues doing a KVM passthrough.

You should just build a dedicated NAS if you're going to want a NAS, dunno if that RAM would work in that board.

[Big Head Tech]

3 minutes ago, Streetguru said:

So what exactly is the plan here? GPU passthrough to a virtual machine? Those CPUs aren't going to be particularly fast and would bottleneck a 980ti, also nvidia has some issues doing a KVM passthrough.

You should just build a dedicated NAS if you're going to want a NAS, dunno if that RAM would work in that board.

I just want to build a server.  I've built just about everything else, probably over 500 PC's at this point but never tackled a server/VM before.  The idea is similar to 2 gamers 1 PC.  We are talking about $300 bucks for this build.  I have a power supply, can probably use my air 540, and have some spare HDD's and SSD's laying around.

[Big Head Tech]

Any other feedback or checking compatibility?