We are flying American tomorrow morning, our first time with our 13 month old daughter. American allows you to check-in online 30 hours in advance and you print out boarding passes which is what I did this morning. We plan to check our baggage curb side if they are open that early in the morning (we have a 7:15am flight). We can go right to security and then our gate once we arrive at the airport so how early should we arrive? We will have stroller, car seat etc to deal with too.