Why not just put in the information you have, file then serve. The divorce will only be a problem if you don't have him served personally and can't find him, in which case you have to divorce by publication, much more complicated and costly. I would make this a priority if you are worried he will leave his illegal apartment, if it is, in fact, illegal. Process service is about $75 here (my friend did it) and you get three tries for that.
My friend's soon to be ex alcoholic husband had no apartment after she left, job or health insurance. Not her problem. Not yours either.