Divorce Support Forums: Restless nights, and No Answers.

Hello, I need serious help. I could write a 100 pg book on my problems. But let me try to keep it basic for now.
I was with my ex since i was 17 yrs old. Got pregnant at 19, got married right after my birthday at 20 yrs old, due to being pregnant. He walked out on me lst year about this time. Now he works in the oilfield he makes very very good money. I on the other hand was a housewife. I had no check of my own. The agreement was he would pay for the UNCONTESTED divorce, since we was in agreement, I was to get our daughter and he was to get our son, we already divided our personal assets he got 2 motorcycles, I got two boats, the house goes back, his truck is his, my truck is mine. Okay. Well 2 months ago I called his lawyer to check up on the situation. His lawyer (which im sure it was an accident) said he wanted both of the children. Now, he had my daughter for 3 1/2 months, because I didn't have a job, I couldn't support myself and couldn't support her, I knew he had money so stupid me, I did what was best for my daughter. My mother passed away in feb. of 07 two months before he walked out on me. One month later he had a new house, a new girlfriend moved in who has two children (word is that the court deemed her an unfit mother of her two so she only has visitation rights.) I got my daughter back, she had lice (was told for 2 months going on 3) had two bald patches on her head from ring worm, and had a blue mark on her ear i could perfectly put my thumb in between the blue marks. I filed a report with the police. I got my son for visitation last december, and he looked fine, he is also in school though, so he doesn't spend all this time with the ex's new woman. Last time i talked to my ex he cussed me like a dog and i have it all recorded on tape, when i played it back all you hear is an electrical hum (thanks cordless phones!) So i've been talking to this lawyer of his instead. This man is a "Well respected ex judge" of this county that is a quote from 6 different lawyers. The quote for representation no more than 2000.00$ because I'm not fileing, my ex is fileing. with 1000.00 up front, after i tell them who my ex's lawyer is, the price jumps to $3500.00 with no explinations. (forgot to add when i ask the price it's of the secretary, then i talk to the lawyer and the price jumps) with a min of 1/2 he 3500.00 up front. I don't have the money. I'm considering in representing myself, just on the fact that every lawyer i talk to is so eager for takeing the case and saying that it's so strong. But then I think, why do they boost the price after i mention this ex-judges name ?? I have two of those 6 lawyers not call me back for 3 days. Finally i got a hold of his firm, and a different woman told me, he wouldn't take the case... but she would for 3500.00 in full. I don't understand this. What are my rights here ???? Now that my ex has decided to try to take custody of both children, I am considering takeing him for anything and everything that I can. When it all started we just wanted to seperate because we were at each others throats every day. On a small note, if I do represent myself I tend to state nothing but facts and provide the evidence that I already have, and i also have a letter from his lawyer stateing, that it was uncontested, we divided our assets, he would have our son i would have my daughter. Would this help me in any way ??
Any comments would be great..Thanks