I have a few thoughts I would like to share.
Having the kids help your wife move out is THE MOST RIDICULOUS AND CRUEL thing I've heard on this site in a long time. The kids need to be hearing over and over again that they did nothing wrong, and you want to have them engage in the physical act of you guys separating?? As others have suggested, for the love of God, take the kids away for the day while she moves out. If they are accustomed to this place, have some stuff there, it's not "new" or "scary" to them, why the hell would you want to subject them to physically moving her out?? You are putting WAY too much pressure on them to take this as a good thing.. Ugh, I wish I could say the right thing here to make you reconsider this..
And I'm confused why you keep focusing on telling the kids about the separation WITH your wife. Talking to your kids about this is going to be a continual process, not one little meeting between all of you and things will be fine after that. I've been separated since October, filed in November, and even tonight I was still reassuring the kids that they did nothing wrong, mommy and daddy won't be getting back together, and telling them that I will always love them. Your wife is NOT going to be there for tons of conversations in the future you will be having with your kids about this. She's not going to be there when they ask you questions or break your heart when they tell you they still wish you guys would get back together. In fact, I have a feeling she will be like my STBX and will try to alienate you from them and tell them lies to make herself not seem so bad, just as my STBX lies to my children all the damn time. "No boys, OW is just a friend. Even though she is here every time you are and you see us sleeping on the couch together, she's just a friend. It's your mom's fault we aren't together."
You need to STOP trying to do things with your wife. DETACH from her and stop trying to play "happy family." You are confusing the hell out of your children. Time for them to start learning that mommy and daddy both love them, but mommy and daddy have separate lives now and will NOT be having any more "happy family" time. They do not need you guys to do this. Perhaps they need to hear that you guys are separating, and you guys need to actually separate already, and you need to start building your own relationships with the children. Being polite co-parents is definitely an advantage, but I think playing happy family once in a while, thinking it will benefit the kids, actually confuses them more and gives them false hope. Perhaps this can happen when YOU stop having false hope..
I guess first you need to be firm in your decision about the fact that this relationship is over, and then you can start working with the kids on reassuring them that even though the relationship is over, your love for them will continue. I think you being confused about what you want is pouring over into them, making them confused about what is going on..
"Emotional trainwreck looking for someone new to whom to cling."
Ugh. No wonder everyone is so worried about the kids. They are witnessing too much of this. You need to get yourself together emotionally and make some firm decisions and focus on what YOU can do for your kids and STOP worrying about what she will or will not do.
My last thought. I think every wayward should be shown the door in the beginning. Then, they can fight like hell to get back in or walk away. This will either lead to a healthy relationship or a healthy detachment. Sounds like you are trying every trick you can think of to keep her from walking out the door, but pulling her back and "clinging" to her is NOT going to lead to a healthy relationship.. It's like you are begging for her back, even though you know it won't be a true reconciliation where she admits her faults and gives transparency and does all the work to make you trust her again. It's like you are begging her for a Rugsweep of this affair, and you're mad that she's not even willing to do that. You deserve so much better than this, and I hope continue figuring out why you are doing this, low self-esteem, co-dependency, actually believing her blameshifting and taking responsibility for her affair, whatever it is, please figure it out so you can stop letting her dictate how you feel about yourself. And you can't do that until you actually detach from her and stop listening to her about what she thinks of you..
Lots of hugs to you Abbondad. As someone said before, I admire how brave you have been to post here and open up to us about your situation, and I hope you continue. I really hope you take some of the great advice people have been giving you that have been there and done that..