Our state went to 50/50 a few years ago, after I divorced. It really is worth it to talk to an attorney and find out if you could get a change of judge. I did that but I did it before the papers were signed. Reason...my assigned judge was the town drunk! That being said, my state lets you basically change the judge one time with no reason having to be given. Luckily, my attorney knew this and was on top of it.
It's worth it to have a attorney who is well versed in addiction, and hopefully they can hook you up with a judge who is as well.
Just my two cents. Family court is definitely not the same from one place to another.