I didn't think you could have more than 10 nodes? Is it really unlimited? You need the CMD window from what I understand. it cant run as a silent process. Do people in your office understand while you are slaving their machines will run like crap? Its going to use all the resources it can.
My workflow is to only DR to machines not being used during the day and at night send final renders out to whatever I can. Let us know what you are able to figure out.