Pairing Quadro 6000 (fermi) with GTX Titan

Hey all
I have a dell R5500 workstation powered with 1xTitan 6GB. I am pretty happy with performance in UE4. Using Revit and 3ds Max as my other main application, thinking to add a Quadro 6000 (Fermi) to improve the viewport performance and using Titan as GPU rendering machine. Do you thing this way I can improve my workflow by dedicating Quadro for viewport and Titan paired with that to handle rendering as well as improving viewport performance?

Thanks for any commnmets

Any body? Any answer would be highly appreciated