Hi VG, welcome aboard. I’m glad you showed up here! I agree the fine people on this board offer the most uplifting support.
It does sound to me like you've been doing your homework and have a good grip on how to proceed. Be prepared though, it can be quite a roller coaster ride no matter what you do!
How long has W been moved out of the house? What is the duration you agreed upon?
What is your contact like? Is it only kids/business, or is there more? Who initiates?
M: A really long time. Crisis: 5 years. She's still worth it.
Life is never made unbearable by circumstances, but only by lack of meaning and purpose. -Viktor Frankl