That’s a very Beefy System and although I can’t tell you exactly what your FPS will be, I can say you will have no problem with all settings at Ultra with likely 25+FPS. I get pretty good results with almost all settings on Ultra and my system is nowhere near yours. I do get FPS drops in dense Metro areas eg. NYC, or at some Custom Airports. This happens to pretty much everybody though.
My setup:
I5 8400 6 Core CPU
16 GB RAM@ 1333Mhz
MSI TRI-FROZER RTX 2070 GPU
256 GB SSD + 1 TB HDD
600W PSU
Windows 10 Home