The kids and I fly out in about a week. We have a short flight, 30 min layover (ha!) and then a longer flight. So obviously when it is time to get off the first flight, I need to be able to get moving fast. I can't decide if I want to take the Radian or the TFP. I have flown with the Radian before and loved it. I have never flown with the TFP. But I wore the Radian backpack style last time, and this time I am considering using a luggage cart (the last flight lands super late at night, and I would like to be able to pull one sleeping kid through the airport). If I install either the Radian or the TFP on a luggage cart, can I wheel the whole deal down the aisle? Or is the TFP too wide for the airplane aisle? And how does the TFP install on the airplane?