A suggestion- I also have a ThinkTank Airport Security V2.0. It will fit a lot of your gear and fit overhead in larger planes. Love the wheels and it has "emergency" straps to convert to a backpack.
Congratulations on your new purchase.
Just on the note of lens coats, I would not bother. I shoot quite a lot of international sports events and everyone on the pitch has their camera and lens but no lens coats. None. Everyone in the stands (who are not media and where they allow them) who are using long lenses has one with a lens coat on. It always baffles me why. Just be careful with your lens, and you do not need a coat.
You do though need a very good lens rain cover. I suggest Canon's own, as they fit perfectly and are not that pricey.