Need CPU, Mainboard and Case

[BotDamian]

Budget (including currency): CPU + MoBo = 300 euros, Case = around 50 euros.

Country: Germany https://geizhals.de

Games, programs or workloads that it will be used for: Gaming PC only

 

Other details: 

I'm playing on a 2560x1440p 144hz monitor. (ASUS VG27BQ)

RAM: Patriot Viper 4000mhz CL19 (got for 80 euros)

GPU: KFA2 RTX 2080 EX (got for 430 euros)

PSU: BeQuiet Straight Power 11 750 Watt (is new)

SSD: Samsung NVME 970 Evo 500GB

 

What I need:

CPU + Mainboard (9600kf + z390 gaming x) ?

and a cool Case 50 bucks

 

I also think about a very budget custom watercooling:
Phobya UC-2 LT Black Edition

6x EKWB STC 16/10

EKWB tube elastomer 3m

alphacool single laing d5 2x 5.25" 

aqua computer d5 (vpp775 or something)

big rad  a friend has a 4x140 for sell

 

My idea is to use the radiator like the MORA3 but I will screw it to the bottom of my desk.

I dont know abot the case, I would like something I can screw under my desk, something like the Node 202, but it's ITX.

 

I have a old Medion case from Vista times  casemod? hmmm