Defnitely drop the game on a SSD first. Your load times will be much better and may even see a general performance increase on your current system. You may not even need a new GPU/CPU.
Yes while this is true, it depends on what kind of flying you’re doing. 2 hour long scenic tours of Manhattan in a black square plane with photogrammetry on will take up lots of ram. Your Object and Terrain LOD as well as your render distances will affect RAM usage as well.
If you’re doing a 2 hour hop in the FBW a320 between two non-PG cities, you will use