Advice on how to tie into mainline for floor drain and washer waste line

Well it's that time of the year that the honeydo list grows at my house. My wife wants to move the washer and dryer into the basement. I've already dug up the mainline which had a floor drain tied into it as you can see by the picture below. I want to have my washer drain near the edge of the wall. Where would you recommend cutting the mainline and how would you plumb this underground in order to get a washing machine drain line and still maintain the floor drain. My first guess would be to cut the mainline just above the 4" hub on the wye, and then yank the wye out. If thats right what and how would you attach to the SV pipe in order to make this work. Hope I have attached enough. Thanks