I do not know if she will file or when she will file for divorce

I see very few options

Option 1
I wait until my Wife files for divorce we continue to share the house but not the bedroom we stay in this limbo for another 5 months or longer stay in the same house and we can both see the kids when ever we want my wife is working lots and building up a savings pot of money for when we,go our own ways.

Option 2
We both contact soliciters
We have talked about doing as much as the divorce as we can ourselves via mediation
We arrange the finances with a separation agreement
We start the divorce process
We put our house on the market
We sell our house and share the equity
We divorce and go into separate houses
We implement a shared child care plan
I get to see our children some days and she gets to see them on the other days
I move on with my life
She moves on with her life

Sounds simple but none of this is what I want to happen