I would be very tempted to e-mail him back (or tell him when you see him at the next child exchange)
H: When you have a financial settlement drafted you may send it to my attny for review. When the draft is complete let me know and I will supply you with the contact information for my legal counsel. Also, I will be having a plan drafted regarding assistance for son and the funds that will be needed. Where shall I have that sent for your review?
NOW he wants to put something formal in place? Why is that? Because he wants something (a new house). Never mind when you were needing things that went far beyond a financial plan.
Put the ball in his court. Let him figure it all out and then you review it.
