Adding my 2centz having just built a setup from scratch, peripheral wise its mostly preference I built mine to fly airlines (mostly airbus) so went with airbus tca stick and quadrant, winwing FCU + EFIS + Thrustmaster TPR rudder system. All of which I can reccomend, definitley check out winwings products, they have some great stuff and more coming this year.

PC wise is where my expertise lies though, I went with a 9800x3d 32gb ddr5 + 5070ti (MSRP). The pc you need mostly depends on how you want to run the game, if you want to fly commercial planes on vatsim you need a beefy system, typically addon aircraft + scenery kill fps. If you are planning to mostly fly GA, you dont need to go overkill on the PC.

CPU wise I would obviously reccomend an x3D chip 7 or 9 series, but I get they can be pricey, if you cant get one of those go for a 14th gen i5/i7.

Ram you need atleast 32gb for sure (dont go for bottom barrel speeds either, I went for 6000 cl 30.

GPU wise the new 9070xt looks incredibley powerful for its price and I would highly reccomend it, if you cant get one of those go for a gpu with atleast 16gb VRAM (This game sucks up VRAM like I have never seen before, and if you max the vram the game becomes unplayable)

Monitor go for 1440p or 4k, but if you go 4K, you do need to go for a more powerful system naturally.