Do the YO and slip the next two. What you're describing is YO, K, SSK.
I'm wondering about the window into the mud room as well. How effective is that? Does that mean a lifetime of looking at my kid's shoes while cooking? Of course, the mud room will hopefully mean I can stop tripping over the blasted shoes while I cook. houzz has done the dangerous thing of suggesting that the laundry could go in the mud room as well. Options.... Too many. Paralyzing....
Also, what does this do to airflow? We open windows/doors 2/3 of the year.
Hopefully the architect friend can sort this all out.