I don't think you're out of line, but I'd recommend dropping the issue until a couple weeks after the baby arrives and y'all have started to settle in. Unless your turkey hunt requires more advanced planning/scheduling, then you may need to have the conversation before the baby arrives.
My wife and I had our first child August 4 last year, and I went on an out-of-state elk hunt 10 weeks later. It was a drop camp hunt that required scheduling an outfitter months ahead, so my wife and I had discussed it long in advance. I made clear that I would cancel the hunt if she changed her mind after the baby had arrived. We have no family close, so I arranged to drive my wife and the baby back to our hometown to stay with her parents for the week. Leaving her home alone for a week was a non-starter. My wife is an uncommonly strong woman, physically and emotionally, and I'm certain that she could have handled a week alone, but there's no way I would've voluntarily put her in that situation. Even tiny tasks like feeding the dog, feeding yourself, taking out the trash, etc. can be very difficult to accomplish when you're alone with a newborn, especially a newborn like ours that wanted to be held every waking moment.
There's no way to be fully prepared for the changes required by fatherhood, just take things as they come and you'll figure it out.