You surely can do what you wish, but I think purchasing a lifetime license for an 8 month old will benefit the state way more at the present time than it will you or your daughter since she is at least 12 years away from hunting herself. None of us can guarantee that our kids will want to hunt no matter how hard we might encourage them. Like most things in life hunting is a personal choice. If you invested that money wisely for her, she can use it for school or something if it turns out she doesn't have an interest in hunting. Way better than giving money to the state for nothing in return.