hi, if you have children i would get a solicitor, or at least get some legal advice from one.
Dont forget there is nothing stopping you drawing the documents up, then showing them to a solicitor, asking if he/she thinks its a fair deal.
You will of course have to pay for this bit of advice, but i think it would be worth it.
If solicitor thinks it all looks ok you could go ahead as planned.
If solicitor doesnt think its ok, there is nothing to stop you using the solicitors advice but dealing with your ex yourself.
I did this for a recent court case with my ex.......just popped into the solicitors office with all the info etc, I think he was fine about me doing the boring legwork for him!
I didnt get a large bill, and still felt I had the benefit of his advice and the likely way the court system would look at things.
If there are children and property they are complex issues, also the length of your marriage will affect things, and yours and his work, for example if he has maintained you/children etc. Have you considered all of these things?
as already said, Personally I would run it all by a solicitor.....JUST IN CASE.
Once the divorce is finalised you cant change it!