Optimal Workstation

Hi Cattle Herders,
I posted this on the Adobe Forums as well, but would appreciate you 3D guys opinions as well.

I have the opportunity to suggest to "he who holds the purse-strings", what kind of new workstation to buy.
I work primarily with CS6 creative suite, Cinema 4D R13 Broadcast, and need to keep an Avid Software possibility to open my old Avid projects. It must be a PC becuase the whole company is based on PCS, and to ask for a Mac would open a big complicated can of worms. I have no predjudices. MAC or PC; Bosch or Makita. Tools are Tools.

Heres what I'm thinking...
A HP Z620 with the new Xeon E5 processors
32 Gigs RAM
Nvidia Quadro 4000 Graphics card
2 TB Harddrives, with a mirrored RAID Array.
AJA Kona 3G I/O Card.

But I'm not to sure what the relationship is between the AJA card and the graphics card is. Does the AJA card support or speed up the previewing or rendering times through the computer? Or is it purely for the External Viewing? Is a Quatro 4000 enough? Or should I recommend a 6000? And why?
If anyone has better suggestions, or can comment on what I have proposed, I would love to hear.

Thanks in Advance
Simon

A picture is only as good as the glass it comes through. And the person using the camera has something to do with it too.

[Adam Trachtenberg] "They require application specific drivers to get the most out of them and there are no Cinema/Quadro drivers"

I just looked on the Nvidia site, and...
http://www.nvidia.com/page/partner_certified_drivers.html
Under MAXON
R12
259.81 -
Supported OS: Vista 64, Win7 64
Supported Graphics Cards: Quadro 6000, 5000, 4000, 2000, 600, FX3700

I would hope this works for R13 as well. I really want a Nvidia Quadro 6000 + Tesla C2075.
Thanks for taking the time to respond, as always
Simon

A picture is only as good as the glass it comes through. And the person using the camera has something to do with it too.

But for Premiere Pro and After Effects, they smoke.
Cinema 4D is only 1 of my tools. Although my favorite.
And thanks for the Tip with the stones the other day...

A picture is only as good as the glass it comes through. And the person using the camera has something to do with it too.

I'd add, do 4x 2TB black caviars in a raid 0 + 1. I.e make 2 striped pairs and then mirror them. Get blazing fast read write speeds this way. Necessity for hd video. Also chuck in a ssd 120gb + for os and apps.