After doing some research I can't find any proof that an SSD helps with the actual 3D rendering. I had not looked into the Quadro cards so I just did, but it seems to me they are specifically made for rendering and perform bad on playing games. This system is not a 3D rendering system only so I think I need to stick to a "regular" GPU.
it is noticeably faster and it is a newer model. ($215 after rebate)
As for SSDs they have incredibly fast write, read, and access times, meaning they improve the responsive of any software.
Personally, I use Photoshop and I noticed it to be a lot faster in loading up and applying filters etc after getting an SSD. An SSD is a staple for any mid-high end system. It will make a BIG difference on everything, from gaming (faster loading times) to general use (windows boots up in like 8 secs, applications load instantly) to 3d rendering (info from the SSD can be read faster and processes faster compared to a HDD)
I am sure everyone on this forum will tell you that you should get an SSD