Upgrade from i7 8700 di BoNGoG

The build was made because i need to change my MOBO since it is overheating , since I have an i7 8700 there is no reason for me to buy only a new MOBO for it since the last supported cpu on the same socket is the intel 9xxx series so later on if i would upgrade i need to buy a new cpu and mobo again so why dont do it now, overall i am aiming for some improvement something about like 15%-20% in some games and benchmarks but nothing hard, i should see some imporvements with the build in with games like Escape From Tarkov or Battlefields or CODs. If the build is finished and i change something i will update it.