New Workstation Threadripper or stick with Intel?

[Icestation]

So I am going to be building a new workstation for myself at work.
The old I7 3930K and FirePRO V5900 is showing its age now.
Main use of the is CAD/CAM software (FeatureCAM(Autodesk), Solidworks, and a few other basic stuff.

So I was thinking of doing a Threadripper 1900x-1920x vs a I7 7820X. (Probably cant swing a I9 budget wise depending on graphics card suggestions)

So what CPU/Graphics Combo would you guys recommend?
I could probably swing about $1200 on those two items, then the rest of the box is you know standard/personal preference stuff.

FYI I don't do any Solidworks simulation stuff, just modeling. I just over buy so it last longer. I don't like to do this often as you can see from still using the 3930K and V5900 Firepro.

Thanks

 

[vick1000]

I don't think your CPU matters that much for those applications as you describe using them, why not save money there and spend it on storage and RAM?

 

[Icestation]

longevity for the overall system, is the main purpose, like my current setup was overkill 6 years ago when I built it. So if the next system takes me another 6 years it will be worth the little bit extra now. The ram and storage is a non issue, I will go with 32gb as long as I can add another 32 later, or I will just go with 64 now, storage is storage, it will be upgraded at least 2 times in the life span of the rig.