42
Your plan is hugely flawed....if you do what you suggest you will immediately become embroilled in a heartbreaking legal battle where there are NO winners and to boot will cost a bomb.
Your W will be angry when you leave and it will be very very unlikely she will vent her spleen and attempt to get back by fighting you all the way.
What is best for the girls is the ONLY answer...
There is only one Mum & Dad
W will percieve her position as a Mum is threatened by your new Partner.
It is highly likely that if you move 100 miles away your contact will be limited and not what you really want.
Whilst you may want to move on with your life it may be v prudent to consider Marriage Guidance....it is used just as much with assistibg parties split than actually reconciling and with W's health the strategy you adopt is likely to cause a lifetime of resentment.
Remember well balanced kids need input from BOTH parents.
So my advice Relate then
mediation to properly work together to plan the sep and divorce and the arrangements for the children. Only the eldest is old enough for an opinion and anyway it isn't fair for children to decide these issues.
Parental Responsibility means just that and it calls for bravery from both parents if they are truly to put what is best for the children first.
If possible try to stay local and jointly enjoy your children growing up.
You have to establish AND maintain a good working relationship with you W where ever the children live...until they leave Uni so 18 + years
A potential banana skin is to not force your new partner on the C
Work together with W as to how and when C should be introduced..discuss this in
mediation and emphasise that you are NOT trying to marginalise the mother's role.
I think it is a huge misconception that a Mother who has the C living with her full time is in a better position. If the F has generous staying contact with 50% of hols F often get better real "quality" time. Mothers are often left with a difficult role..including the homework/discipline issues and when you consider W health here is not 100% PR is fully needed to shine in adversity when parties split.
With careful guidance your W will accept another chapter in your lives is about to unfold but with you supporting her financially AND emotionally your children will be the beneficiaries- if you choose the other option...well it could be very traumatic for all.
How many young girls faced by watching an ill mother being (deserted) by father may provoke a response from them you don't want.
Remember they tend to say what the parent with them at the time wants to hear!!!
They are children and will think like children.
It is your separation and divorce not there's so if you suspect Mum will tell them all (even unintentionally they could be damaged by this and affect their relationships for the future).
If the C have seen their Dad leave for another woman leaving an ill Wife will they ever learn to trust their Husband's or Partners.
No there is no easy answer to this one....time is a healer.....needs careful handling and sensitivity....you may not realise it but handled in the right way you will be paid back handsomely when W ultimately realises you did handle to sep and divorce as well as you could.
This really could sream out for a Collaborative law approach in this case -check solicitors in your area who will adopt this approach.
Sincere best of luck