JimK
With this method its always good to have a good stepping off branch well below the anchor so you can switch over to drt. I usually try to find a horizontal branch i can stand on , hook up the lanyard to the main stem and do the changeover. Let me know how your stairstepping method works out. i like the single prussic w/equalized feet just for less knots and so i dont use one foot the whole time. Sherril has a couple of systems that work with full harness with rollers on top to keep you mostly upright. They look great but i have not used them.

climb safe