The evolv atx has 2 x 140mm in the front or 3 x 120mm. Since you are using 140mm fans, there is no third spot for a fan. You can however mount the rad up higher and leave the psu-shroud piece and hdd cages. The top fan will not mount to the case on your aio by doing this, but 6 screws are still plenty. Here are some pics from other peoples build:
However, you won't be able to mount 3 fans up top the normal way. The top of the rad will interfere with the third fan spot.