The total price at pcPartPicker is really misleading because I will get the GPU (second hand) for something like 30 euro a month for few months leasing from a friend of mine and will start it only with the necessary stuff like 1 SSD and 1 stick of RAM and get the other one the next month after I make it up and running.
I already bought the 60 Hz monitors and the 144 Hz one will be the last thing I get after I check everything else from the list.
There’s high chance the desk I need custom made to eat more than the expected money even though I have deals with furniture making companies here and there and the worst that can happen is to get some cheap old i5 CPU for few months before I can afford something like the i5 - 9600K which is about 270 euro new here.
I for sure need to get all the parts that are required to make it running at the same time, because I don’t have desktop PC at all to check even if the CPU cooler is working or the god damn PSU 
. What about Mother Board and CPU only ?! 
Else I would have started buying it piece by piece, but seems like really stupid idea.
Probably will wait for Black Friday to order the stuff as well 