As long as there is SLI support on MoBo and same GPU (2080/2080 Super/2080 Ti/Titan RTX/Quadro), yes, it is possible.
Don't expect anything new in terms of perfomance, most game devs don't even care about dual GPU setups.
I'd say for now it is a bit overkill, but that might allow to upgrade to Threadripper and dual Quadro RTX 6000 in future. ( ͡° ͜ʖ ͡°)
No problem, mate. Good luck!)
I wonder why you went with EVO and not PRO series of SSD... They are much more reliable.
To the current stuff...
If I recall correctly, not many motherboards can work with SLI/NVLink, better check for that. Luckily, Blender doesn't require SLI to use multiple GPUs (thanks, CUDA).
Also I'd probably go for Threadripper on your place (to get even more room for expansion on RAM and core count and more PCIe lanes).
M.2 NVMe storage is going to be a nice addition to get a tiny bit more snappy response and in case Samsung SSD dies, you still can do your work because OS and all software will be on separate SSD.
If you'll stick to Ryzen CPU, I'd suggest not overpaying for additional features like Wi-Fi (unless you really plan on using it) and looking at ASUS boards. Their VRM design is usually better (still requires manual comparison of different mobos). Plus they support SLI usually (though, in your case that will only be benefitial in games, which you didn't stated you are going to play, too, so noevermind that part).
Nice case for airflow - something from Fractal Design or Silverstone. But those are expensive, so I'd suggest looking into Zalman stuff (or just browse case catalogs and choose what you like).
CPU cooler is trickier... NH-D15 is better choice, if it costs almost the same as D14, otherwise I would change it only for custom watercooling.
So, yeah, there's that...
