The priority is the welfare of children, in particular keeping a roof over
their head. Does your wife agree to the arrangements for the children?
If care is to be shared almost equally you will both require a
similar sized property to house them adequately. Therefore a good starting
point is to research local housing prices and both parties mortgage raising
capabilities. If your wife's income is less she won't be able to raise the
same mortgage as you which justifies a larger split in her favour to leave
you both on a similar financial footing.
The more the capital
is shared in your wife's favour the more it reduces her living expenses and
the likelihood of spouse maintenance. If you have a larger mortgage your
living expenses will be greater reducing any disposable income and your
ability to pay spouse maintenance.
The duration of your
relationship may effect how
pensions are split. Depending on the
aspirations pensions can be shared or offset against other assets. If they
are offset there may be some discounting of the value of the pension. They
are treated differently from other assets because they are unrealizable
for some years to come.
Forum 
England and Wales 
Scotland 
