Jerry the first thing I would do is cut a O-31 curved track to the size of the finished cut switch. Place several other track similar to what is on the layout next to the shorten curved track and run your O-72 equipment through them. At least you can can determine in a short period of time if they will run through the shorten curve.
Looking at the posted photos and link to the yard switches, I think it is a great idea for overall look, however for continually running larger equipment through the curve section at operating speed I would opt for an O-72 switch, the finished length and curve of the arc looks to tight, regards Rob
