A solid state hard disk is what I like more of my recent PC. It boots in 5 seconds with Win10, and just a bit slower with Linux. I've recently installed Manjaro in a friend's laptop and it flies.
From your list of options I gather that you are pretty tight on budget. I don't think a Chromebox can handle it. Or any nettop. Besides, you'd want to play other games from time to time.
A little background: My PC case is an old Antec minuet 300 which I love, and I've run three different mobos in this case already. I bought it in 2007. Whenever there was a game that I wanted to play but the PC could not handle, I purchased an upgrade, if I could afford it. Current one is holding a i3-3220, 16GB RAM (from 2014), and an addition of a GeForce GTX 1050 (small form factor, from 2017), which runs pretty much everything I wanted to play since the last three years. (Except My Time at Portia, who is very hungry).
What works for me might not work for you, but I really think that it is worth to invest in a good case, a good power supply and good silent fans. My current favourite case is the Corsair 110Q, it is the best by quality/price of the modern silent cases, and it's already 60€ without the PSU. It has dust filters, noise dumping, cable management, and the PSU is located in the base, which helps ventilation. A dust free, heat controlled environment increases the life expectancy of your components.
So I say, scavenge what you can from your old PC, take a good case (new or second hand), and replace your broken components. Unless you know the vendor, don't buy mobo, CPU or GPU second handed, as they are probably burned, but you know, there are many spoiled kids that just want to have the very last GPU on market, and they sell their one year old GPUs that might be just right. I think having a dedicated gaming PC is better in the long run, since you don't mess it with your daily computing needs.
I hope you and your family are well
We are, thanks! Our elders have not felt the illness yet.
now that the Guardia won't fire on you
They won't. Half of my wife's family wears trihorned hats or blue hats
