I am looking for a setup that will allow for maximum gpu overclocking without sacrificing silence or beeaking the bank... Right now i am planning on having 2 140mm fans in exhaust on the back. Then 2 140's on the front as intake, and one more 140 on the bottom btw the harddrive cage and psu as intake. I am also planning on having the dark rock: pro 3 in a push pull configuration (exhausting the air towards the rear) My goal is to be able to oc my gigabyte gtx 980ti to atleast 1500 mhz, while staying cool, will this setup be sufficent??

Note #1: I understand i could remove the top covers for further airflow and/or extra fans, but i am not willing to sacrifice the silence