I would agree with
@rmyoung1 and remove the month of October from your mind for anything sheep related. Scout as much as you can before the baby comes and mentally prepare for not getting to be out there with a gun nearly as much as you should or would like. Maybe only the latter half of November.
You and your wife will likely both be surprised at how difficult things become once that baby arrives and for how long it stays that way. You may not get nearly as much time as either of you think or hope you will be able to get.
First baby... your wife doesn't even understand how difficult this will be, trust me, and neither do you. Nobody does until the end of month one with their first child. Even though she understand how important this is for you and it's OIL, once the baby arrives everyone's mental state will change, just be prepared for that and do everything she says and asks of you.
If you have family nearby lean on them.
You might have to rush this hunt and shoot a ram quickly or maybe not. You have be very mentally prepared for the former. Better to shoot just anything you can and get back home rather than be absent for weeks souring your wife on hunting for the rest of your life by totally dropping the ball and leaving her alone with a new baby, even if she "thinks" it's okay.
This is why I didn't apply for MSG when I knew my son was coming that same fall and why I didn't apply for it this year