Bit of background. Dh together 15 years, married for 10. Have 2 dc (8 & 3). I have instigated us separating - he does not agree/ understand although has accepted. Have agreed to sell the house and have arranged valuations so have an idea of equity. He is demanding 60% as paid in more over the years and was his flat originally (I paid towards costs after a year when I moved in) that enabled us to get the deposit for our current home.
I know this is completely unreasonable and have told him legally I would be entitled to 60%+ having children with me. He refuses to go to mediation and willing for it to get nasty through courts 
I have read that until an agreement is made the house sale solictors can legally hold the money. I will need this money to set myself and children up in new home (rented).
What should I do first?? Sell the house? Issue divorce proceedings?
I'm in such a muddle as he is making things difficult so not sure where my first move should he? ?