Need help with case airflow configuration

[thenemisis2]

Hello there, I am currently building myself a new pc and before putting it to test, I need some help regarding my NZXT Noctis 450 airflow config. As of right now, I have 3x Corsair AF120 (52.2 CFM each) at the front as intake, 1x Noctua NF-A14 (140mm with 68 CFM) at the back as exhaust and 1x Noctua NF-A14 (140mm with 68 CFM) at the top-back as exhaust too. I also have a Noctua NH-D15 as CPU cooler in as pull/pull (dual NF-A15 with 68CFM each). I was wondering if I have too much exhaust and if the GPU (I have my old 6950 2GB while waiting for my GTX 1080 to arrive, but the issue will be the same) will conflict with my airflow setup (is it sucking air in or pushing it out?)

 

[Zerk2012]

What you have now is just fine on reason to change or add more.