LO and I will be making our way on an international overnight flight back to the US. She'll be about 4 months old and we purchased a seat for her (since that's the rule). I need advice as to where on the airplane we should pick our seats. Does she have to be right by the window with her car seat? There are 7 seats across (2-3-2). Should I opt for middle or the side of the plane and more toward the back or the middle?... the fronts have mostly been taken. Thanks!