Ok so with that said, you pretty much know what to look for. :/
You could do a much better job than that asus monitor, but I won't argue with you about it.
Go look into stores such as bestbuy and what not, after christmas and see what deals you can snag up.
You can take that evga psu I mentioned, it'll have the connectors needed to get your new vga card going.
Justified:
https://www.amazon.com/dp/B0756QFLXP/?tag=httpwwwtechsp-20
I have one right now I got it late last year, pair it up with that nic card.
If you don't understand much we have people named jo here and joec at techforums.
Speak with them if you don't know much about networking.
Take that corsair case for 129.99 you will care soon when you need to put in and take stuff out.
Since you want a bigger capacity drive, then follow my advice.
Take that ssd drive from western digital at 500gb, use it for windows 10.
https://www.amazon.com/dp/B0792G331G/?tag=httpwwwtechsp-20
Use this for steam, split the partition into (2tb sizes) use the other logical partition for back up files only.
Windows will love you for it on the long haul, I know what I am doing because I have done this multiple times.
https://www.amazon.com/dp/B075GRQZVW/?tag=httpwwwtechsp-20
MSI boards mostly like kingston ram, however check the mobo specs page and see which ram works best.
https://www.amazon.com/dp/B07BJJRWLS/?tag=httpwwwtechsp-20
So with that finally said, add up everything again, make your purchases.
Best of luck.