Dell Precision advice?

I am spec’ing lab computers for an architecture school. I’m looking at these Dell Precisions: https://tinyurl.com/y765l3j4
Can anyone advise me on the graphics card sweet spot? I was thinking of the NVIDIA® Quadro® P1000, 4GB, but I’m wondering if it would be worthwhile spending more for the P2000 or for dual P1000 cards.
In addition to Rhino/Grasshopper/VRay, they will be used for various Autodesk products, including Revit, Vectorworks, Lumion, and Adobe Suite. And other CAD/graphics apps.
Thanks,
Nick

In our shop, Lumion was the “pushing” factor for us. We were using the M4000’s, but they weren’t performing good enough for us. We ended up specing P4000.