ScubaFishMan

https://www.raymond.cc/blog/install-multiple-mouse-and-keyboard-on-one-computer/
 
Sounds like one of the programs in this link might be what you need. No idea if any of them actually work personally, though.

I feel like flight simulator people might be able to help you

Yes you can skip the activation key step. Though there will be a water mark. 
You can get a key for like 5 bucks on eBay. 

The p400a? That's an amazing case. It's just my opinion that the mesh c is amazing. Obviously it lets say both cases are good. It's subjective at that point. 

Gloop suggested a fantastic build except trade out the Case for a Fractal Design Meshify C.  😀

If OP does end up going with the Meshify C, I'd also advise adding in two 140mm intakes in the front (Silent Wings 3 or NF-A14 would be my picks) as you really need them to get the most out of that case airflow-wise.

You can use the stock cooler,but if you are sensitive to noise or want ot enable PBO I'd suggest picking one up. A bequiet! Dark Rock 4 would be a good fit.

I would maybe try to squeeze in a Ryzen 3700x, because new consoles are gonna have 8 core processors as well and games on the PC will most likely start using more cores. That should futureproof your machine nicely. Obviously the 3600 will be fine for many years, but the 2 extra cores + 4 threads will most definitely carry you for longer.

Oh my this is exactly what I was looking for! Thanks @gloop for the help! 

Thanks everyone for the advise. Didn't realize how helpful this forum would be! I will definitely be back with more questions.  @Oswin @TofuHaroto @boggy77

Thanks everyone for the advise. Didn't realize how helpful this forum would be! I will definitely be back with more questions.  @Oswin @TofuHaroto @boggy77

Thanks everyone for the advise. Didn't realize how helpful this forum would be! I will definitely be back with more questions.  @Oswin @TofuHaroto @boggy77

Yeah I have a 240hz monitor. I might try giving this a shot though! Thanks for the advise!