Forget 32Gb, no game in near future on PC will need that. Especially a game coming from CDprojekt.
Unless you're planning to degrade frames per second and watch a slideshow in 4K, 8Gb of RAM is enough. But in such case you shouldn't buy PC at all. Get yourself a nice Nintendo Gameboy instead.
The only game that says minimum 16Gb of RAM lies upfront to customers and god knows when it'll be released - Star Citizen.
But there is a catch. While 8Gb as such in a gaming rig is okay, don't tell me you never use 7zip or winrar. These two utils work faster when you're rich with RAM. Any installer based on them also work faster. So while you won't be utilizing 16Gb all the time, it's still nice to have.
Just to be safe and not milked, buy 8Gb right away and add another 8Gb later.
CPU is easy. Quadcore with 3+ Ghz is a must for years now, hexacore is even better. The day you decide to buy check prices on CPUs and motherboards then pick whichever is cheaper. It's CDpr we're talking about, their code is not unoptimized Ubisoft garbage.
Do not buy i7 nor threadripper! Or i9 or those 24+ cores CPUs. Unless you're projecting houses. Since you're not, go for i5 or R5(2).
With GPUs it is impossible to know today. Sorry. Next generations are coming out soon. It's still unknown if the game will use TressFX or Hairworks. Or even both. You'll just make sure the card can run what the game will offer.
Then I have to mention SSD. Seen some people still skip buying it. Do not even think about saving that for later!
Don't fall into a trap of advertisments about SSD speed. You won't notice any difference between them in real world, so when it comes to SSD, buy the cheapest one. When you see a discount, don't jump on it instantly because some SSDs are much more expensive than others even with discount. For no reason - you're paying for the name on a sticker.
HDD and optical media drive… You don't need those any more inside the rig. Buy external USB ones. Which also means the case needs to have at least two USB 3.0 ports at it's front side. And fans inside. 2-3 fans at least. Built-in.
For PUBG and crap like that you'll also need headphones with mic. Pick Sennheiser if you can, if not, any rubbish will do the trick. Pick wireless ones only if you'll play games on wireless k+m, otherwise doesn't matter.
wi-fi gadget? Airlive WL1700 and Alfa awus036h are history and you need one of these only if your router is 5 kilometers away. Both are still unbeatable when it comes to utilizing 24dbi antennas, but you're not doing some tourism or shady business, right?
Since you're not that far away from a router, pick usb-N14 from Asus, when it comes to home use it cannot fail. Wire? Nah. No reason unless your internet provider screwed the router's firmware.
Mushrooms? I don't see any reason to torment yourself with that. It's CDprojekt. Not whomever ported Neptunia onto PC.
