We are on a red-eye flying into Florence at 11:30am from the US. We have two teens with us. Currently we have a Duomo tour scheduled for 5:45pm. Normally I wouldn't attempt it. The cool thing about this tour is when you climb down from the dome the church is empty and you get to see it without crowds. That would be new for me. I could alternatively do a tour/climb the next day in the crowded part of the day. I have been 50-50 on attempting it.
What do people think about trying to do the Duomo climb late on the day of a long flight. Reasonable plan or a disaster waiting to happen? If reasonable, nap or no?