Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
How much are the two houses worth and how much is outstanding on the mortgages?
What other assets are there and what income do you each have?
My apologies for the delay
How much would a suitable cheaper three bedroom property in the same school area cost to buy (for your ex and the children)
Could your ex take more from her Salon if she wanted to?
What Pension provision do you have?
That is minimal then which is a relief,
How old are the children and how much time are they likely to spend with you?
I am afraid that both properties will be seen as matrimonial assets and the starting point for division between you is 50/50.
Indeed there is a real risk of her obtaining a larger share of the assets - say 60/40 or even 70/30 in her favour to reflect the substantial differences in your incomes.
The only way that you will be released from the mortgage on the matrimonial home is if a substantial sum is paid off the it - and the only source of that would be the proceeds of sale from the other property.
This is clearly going to have to be the subject of negotiation with your ex using Family Mediation
I hope that this is of assistance - please ask if you need further details