Start with the Master bedroom right away. She slept elsewhere last night. Make it permanent until the affair stops. How about "Under the current circumstances, I will not be sharing the martial bed with you right now."
Make it YOURS. Make it Manly.
Pictures of Motorcycle, Cars, Guns, whatever. Get new bedding. Put the stereo in there. Listen to it as loud as you like.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712