It can house 4 120mm fans (2 on each side) and a 200mm in the front, that may help increase your CFM and/or decrease noise over a 140mm. Pictured in this reply is an NZXT FS-200 LED 200mm fan in the front. You should have good airflow regardless, you have the right idea, I'd only suggest adding the 200mm and 2 more side fans if you'd be more comfortable with lower temps or want to OC a tad more.