Currently I have my washing machine hooked up to a sanibest pump via a utility tub. This setup works OK but I figured why not increase the pumps life by bypassing it all together. I was thinking I could remove the cleanout and install a 90 (to the left) from that 90 install another wye and put a new cleanout on that and from the remaining end of the wye make a 3" trap and connect the discharge hose to a 3x3x1.5" and connecting the hose to the 1.5 and putting a reducing bushing on the end of the remaining 3" outlet to an AAV. Any flaws to my plan? FYI the 1.5 coming from the right goes to the kitchen sink. That's what the washing machine used to drain into but the machine itself was about 20 feet to the right, and when it drained, the kitchen sink made a gurgling sound.