Are you sure your ready to work weekends,every weekend in both hot and cold temps.Family life want be the same,hired help,some empolyees will start their own washing bussiness.
I've never owned a cold water washer but have washed a few days with cold when burner was down.Hotwater makes it easier in my opin for the bugs and grease to come off faster.Fleet washing isn't for no slow pokes,you'll need a little speed under those heels.But yes you can wash with cold water and your rig is big enough to handle it.