I do think that no matter what you decide to do, once its done you should definately go dark until the scheduled meeting day. Usually the rules of going dark exclude matters concerning the kids.
If there is a threat that you cant trust him with her to either stay away from MIL, or not return her to you then you should definately be cautious. Maybe if he wants to see his kid, he can come set up the nursery for you, or pay a day laborer to do it!
I agree that he will need to be more engaged in the parenting, support etc, and I dont want you to look at it as a one time deal, but instead as a chance to start proving himself. He needs to show you consistency, and that will have to start with one visit, followed by a 2nd on-time, as scheduled visit, then another. And if he fails in his consistency, you go pitch black again.
I guess I gave the wrong finger to the wrong man...