Yeah I have only WCed a few times... I build the rig up with enough slack in the hoses that I can move pieces around while the pump is on to bleed the air. (flip the rad 180 degrees for a few minutes. Tilt the whole rig to the side then the other side...
Never took more than 10 minutes to bleed a system after my first attempt./
But I also never ran 4 blocks in a loop