Hi friend,
You've got a plan and that sounds great.
The next parts are to get them signed and enforceable.
After that, do what you wish.
I'm going to disagree with everyone here, but I wouldn't care about going to the MC with the pastor or someone secular if she gives you the enforceable separation agreement. It's a deal. No one is going to be 100% happy with it. But, you should stick to your end of the deal. If she wants to see an aroma therapist... go with it. It just takes X amount of your day, but it won't hurt you.
Remember, she's the mother of your kids. You're going to have to deal with her no matter what you decide to do. Say, for example, one of your kids is getting married. Do you want that to be some awkward day where they have to plan out where to seat the both of you? What about college graduation dinners and such? With the kids, that's going to be the thing. You either make all the events in their life awkward or you learn to get along with her. So, if she wants to do something like MC with a pastor... what does it matter? You're showing you'll meet her halfway, but you don't have to agree with it.
The important things here are that your business won't be impacted, that your assets are secure and that you can get some time away for some real contemplation of how you want this thing to look going forward. And, it looks like you have a solid plan.
My advice... let her be her. Let her be 100% who she wants to be. You can't micromanage it. You can't force her to do something. You don't want to give her guidance of who you want her to be. She has to be HER.
And you have to be YOU.
Where you go once you get the assets split, and both of you have the freedom to be who you want to be, and the confidence to be who you want to be... then see where it goes. It could be impossible to continue a relationship. It could get better. No one knows the outcome. But, once both people have the freedom to be who they want to be, and they become those people, then you can look to see what you want out of a relationship, or if you want a relationship, with that other person.
I'd just say to get the separation agreement done. Then, after that's done, say that to consider reconciliation, you need to know the whole truth and that can be backed up with a polygraph. Then take your time to see what you want to do, and what she wants to do.
She may get the agreement signed and go wild with the exuberance of a high schooler, or she might become who you thought she was. She can only do that when she has freedom to be who she wants to be and the distance to realize it. You can only determine who YOU want to be with distance and knowledge.
Again, I wouldn't start relationships at this time, date or have sex. I'd relax, hang with friends, do some gym time and just let your mind take a break. Work hard and build up your business. Check in with her every now and then and see what you can, but mostly just focus on you and what you need.
Letting her stay in the house, for now, may be a good idea for her and for the kids, and maybe for you. Being away from the memories and being truly on your own might be just what your mind needs to unwind.
So, to recap, your plan is great. Get everything signed off on. Lay out what you want her to do to consider reconciliation (consider) and then back off and see how she plays it.
You're doing great.