A couple of things first, mggs, before I respond.
1. I will be in prayer for you b/c divorce is not an easy thing.
2. No matter how difficult the path ahead of you becomes remember that all you have to do is lean on your faith to get you through. Jeremiah 29:11 is an awesome verse to help you keep hope during this time. It literally became my mantra while I was going through my divorce last year.
The legal fees can be daunting - I know I could not have afforded them without financial assistance from my family. However, you can do a lot of it through the self-help division of your local courthouse. You might want to do some research to educate yourself on your county/state's family laws, as well. Knowing your rights can go a long way at a time like this.
I would also recommend finding a Christian self-help book on divorce. I read one during my divorce titled "The Christian Family's Guide to Surviving Divorce." It really helped me during the times that my ex was not so cooperative.
And, in my personal, very humble opinion - keep it clean and "fight" fairly. I made sure to prayerfully make every decision with my children's best interest at heart. When things would get ugly, I would retreat and let my attorney handle all matters directly. It was difficult to avoid my ex when we were exchanging the kids, but I made sure it was done in a public place to minimize the chances of conflict.
I hope some of this helps.