Here is some info on my system to help you with your decision. As I mentioned, I have an i7-10700. Not overclocked. 32GB DDR4 3000MHz RAM. 512GB NVMe. GTX 1080 8GB. I have dual monitors. I play on the 1440p monitor at primarily high settings. The other monitor is a 4K monitor that I do not use for any game windows. I’ll have a browser window up or I’ll be looking at approach charts on it. Last time I looked at FPS, I was usually getting around 45 FPS with this setup.
Attached are two images. One shows my CPU load flying towards downtown Chicago. I have photogrammetry on, real-time weather, AI traffic (low density). The second image is the game’s screen capture at the same time as the task manager capture. In the extreme lower left corner, you can see the Astros beating the White Sox 
This will give you an idea of how hard my CPU is being driven. If I had an i5-10600, I’d probably still be about the same, but there’s no way I’d go lower than that.
I hope this is useful.
