I'm not sure what constitutes "Training Wheels" for your target novices. You could start them on just printing B&W through the colour driver. When I've tried this, on quality media with a quality profile on K3 Epsons, the results are surprisingly good. A far cry from the metameric 2100/2200 that many of us started on. Then you could progress them to ABW and QTR. I'm not sure what BO printing adds to the learning process.