Thanks for all the feedback!
As Shawnb99 mentioned do not place a QD4 on the outlet of the pump. Well there is a problem and i didn't noticed this until he mentioned it. My loop goes: D5 top/res - cpu - gpu - radiator and back to pump.
So at this stage using QD4 is not a good idea. Unless i place the D5 top/res on the external exhaust (right under the psu) see picture:
Then loop order will be: D5 top/res - cpu - gpu - QD4 - rad - QD4 - pump (this makes it easy to detach the rad from my main loop)
Will this loop setup cause me any problems ie placement of D5 res/top?
Also people say it should run with my new setup i was hoping something like "it should run easy no problem"
So im left with 2 options either use the old setup again and deal with the weight its just a one time effort lol. Or do a test run with my water loop outside the case hook up the QD4's with flow meter and check flow. If to low then either go back to old setup or bring in another D5 + dual top from EK. I have to rethink this over again.
And yes i have the BLACK QD4 but never used them what a waste of money 100 bucks down the drain because even when NOT used at all i could see WHITE oxidation inside the black QD4. So lesson learned when it comes down to QD4 it will be the regular silver ones. The Big @ss radiator cools like a CHAMP very very low temps when playing long sessions of games. The CSQ EK pump top is so good its DEAD silent.