So, here's the situation.
I'm going to order the parts on the start of July. Here are the specs:
CPU: AMD Ryzen 5 1600
Memory: 8GB DDR4 2667MHz RAM
Motherboard: Asus ROG Strix B350-F Gaming
GPU: Asus Cerberus GTX 1050 Ti
Storage: 1TB 7200rpm HDD and 250GB Samsung 860EVO SSD
PSU: CoolerMaster 600W or something
Case: MS something
Can't remember all of them. My seller recommended the PSU and the case while we were discussing that on Viber, so.
Since I'm sure people will start asking stuff about MS, it's a Croatian brand with good cases, but horrible anything else. Their PSUs go in flames because e.g. if one's rated at 14A it can usually handle barely 11A or so, so they're unreliable. At least that's what I've read and seen.
Their cases are pretty good on the other hand.
Sadly, the motherboard doesn't have PS/2, which will make installing Windows 7 a bit more complicated. At least I'll get to use Windows 10 as a daily driver though. I usually don't like change, but I guess I'll have to face it. I felt the same way when going from XP to 7, yet I had a good time.
Worst-case scenario is that I might use Windows 7 in a virtual machine. We'll see.
Now, other news: I discovered that my monitor can go up to 75Hz if I drop the resolution to 1280x768. Gosh, it's so good. Word feels smoother, Excel feels excellent, PowerPoint feels smoother, Notepad feels smoother... it feels like heaven. Now if I could only reach 75fps in games, that would be great. :v