Lawyer or no?

My spouse has totally blindsided me with wanting a divorce. He is currently deployed and this came out of nowhere. I think we can work it out amicably and my plan was to just file myself to save the cost of a lawyer, but I want some items like him putting a certain percentage of his inheritance into a trust for our children. Should I get a lawyer? Did you or did you not and do you regret it? I am so lost right now.