build question

1. What's your budget/currency and country of purchase? Any preferred physical/online shops?
	Would prefer to keep it below 1200 for 1 build and an upgrade,
	I can buy online, but I live near a Microcenter and can easily stop by to grab anything.
2. Gaming? Streaming? What's your resolution/FPS targets? What games are you playing?
	Gaming. Want to get the 144hz experience.
	PUBG at the moment, but would like to try out some high end games.
3. What else do you need to buy? (monitor, keyboard, mouse, headset, speakers, Windows, WiFi)
	144hz monitor, would also appreciate recommendations for wifi chip and wifi router (currently using the default AT&T modem/router)
4. Anything else you want to tell us? RGB, Small Form Factor, already have a part list? Tell us!
	I'm aiming for 2 identical builds and would prefer an AMD build.
	I have an existing system that I built years ago - https://pcpartpicker.com/user/adnap/saved/#view=2KsJf7
	The list is missing the power supply model since I couldn't tell what it was unless I take everything apart.
	I am looking for an upgrade on the existing build, and a completely new build.
	For the upgrade, my knowledge is that all parts in the current are pretty much outdated,
	so to me it seems like the only parts I can reuse are ssds, hdd, PSU, case&fans, cpu cooler.
	Please advise. I'd appreciate if the build is future proof or upgradable in the future.

Thanks!