I am installing an upflush toilet that runs a 1" PVC discharge. This will be connected into my ABS soil stack. I wanted to check to see if this configuration is appropriate and would work? My plan is to cut the stack and use ABS cement glue to install the wye. Then use ABS to PVC Green Transition cement to connect a 1.5"x1" PVC reducer bushing. Then use PVC primer/glue to connect the 1" PVC discharge line. Does this sound right?