Wired is the best way to go whenever possible.
While I could live off 25 mbps, I'm glad things are no longer that slow when I'm downloading 25-50 GB games off of Steam. I just wish I had more options to increase upload. With Spectrum I have to upgrade to their 400 mbps service to get more than...
The game even tells you that real yakuza use a gamepad. You're a real yakuza aren't you?
Only got to mess around with 0 on PC for about 15 minutes, but it runs well for me on an 8700K, 16GB RAM, and 970 GTX.
Yeah, the video card is the main issue there. I would get a 10 series or wait a bit for an 11 then you can keep going for another year or two before rebuilding everything else.
My only argument against that monitor would be it only having a 100hz refresh rate. Being an ultrawide 1440p monitor it would probably be fairly hard to hit 100 fps without dialing down the graphics a bit though. It's pretty much up to personal preference.
Have some specific monitors in mind? Refresh rates? What are the specs on your computer?
Personally, I would lean towards the 1080p if it's 144hz so you can push the frame rate as close to that as possible. A 1440p might be a good middle ground.