Quoting 3 little monsters:" Get a lawyer. It's expensive but they know all the ins and outs plus if he does show up you'll have a professional on your side. "
That's honestly what I feel most comfortable with, but I have two friends that each filed on their own and got what they wanted and are trying their hardest to convince me to do it as well lol.
I just kinda don't like leaving it up in the air though. I'd rather just have a lawyer there with me in case he gets a wild hair up his ass, which is also why I want an actual legal custody agreement lol.