Hello,
I have been in your shoes before. I use Blender now (because it's free) but I use to use C4D. If you award me this project, I will do all the research required to prove which graphics card is better/ worth it. I can also look into if it would be possible with your version of C4D to set up a Local Network render farm, using any computers you have around. Also, if you really need something rendered, I can offer my PC power to help render as well.
I am a video editor and motion graphic animator. I am very experienced with AfterEffects and all of Adobe's CC. Plus I use Blender for my 3D Modeling and Animation.
My sample videos are at Vimeo: user51109908/videos
Please contact me if you want to discuss the details, thank you.
Marcell