"As with painting it positively, have thought about going with the " you'll live closer to all your friends" approach, as I live in the forest, 8 km from their school, friends etc"
NO. Do not paint it as a positive thing. In the future you don't want to mess up their marital lives. If you spin it into a positive thing, that line of thinking will be ingrained into them and they'll end up leaving their spouses because it's "no big deal".
Have your W start the discussion, but you be there to listen. Discuss beforehand what the message will be. In no way should she say that the two of you are in agreement on this. She should take the responsibility. If she deviates off of that, stop her and just tell the kids that they are your priority and that you both love them. Keep it on the kids.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.
