If you can afford it, the 5950x is basically as good as it gets before you're into thread ripper territory, so should see you sorted for a while. I'm surprised the whole build is that cheap in honesty - I think I paid around 5k for mine in parts - I know my 3090 was around 2k alone so I guess that's where most of it went.
The new Intel? Haven't read about it yet but presume fewer cores but faster ones? Again, varies by NLE but more cores seems to get better results than fewer faster ones on Resolve.
If you can afford it, the 5950x is basically as good as it gets before you're into thread ripper territory, so should see you sorted for a while. I'm surprised the whole build is that cheap in honesty - I think I paid around 5k for mine in parts - I know my 3090 was around 2k alone so I guess that's where most of it went.