Divorce with no lawyers. Is it possible or better yet, is it feasable?

When I file for divorce my husband will probably change his mind on what we are currently agreeing on in the split. We don't have much savings, no children, no stocks or bonds. I plan to leave him the home that is in both of our names and let him keep all of his 401k. I simply want him to keep me on his insurance until I remarry or get insurance of my own, and to pay off the car note (less than 10k and me keep the car, he has a truck) and of course allow me to take all of my belongings from the home ie:clothes, computer, furniture from my side of the family...He believes we will get back together so says now that I can have whatever I want and agrees to all my 'demands'. I fear that once I actually file for divorce he will try and 'renig' on all of his promises. How do I go about getting all of my demands 'legally binding' and documented before I file for divorce so that he cannot change his mind once it happens? My main reason for not wanting to use a lawyer is because he and I just don't have alot and he's worked so hard for what we do have that I don't want to see a portion of that have to go to anyone else. I just want to protect what little I am asking for without having to involve a legal team. Is it possible? He has to see that I am offering him a great deal here but he doesn't want the divorce at all so I fear out of anger he may cause me trouble. Cutting off his nose to spite his face syndrome.