Absolutely on ensuring your trailer and truck are working well. Go for a cruise and practice a bit - slowing down, how much time you need to get up to speed when you cross or enter a busy highway. Practice backing up, and turning wide to avoid gate corner posts and pedestrians on the corner. Know how to engage the trailer brakes on their own if the trailer tries to get ahead of you.
The guy that hauled my tractor from AB to SK for me (on a semi) used some straps on top of the chains... big, expensive looking straps. He used pieces of carpet at rub-stops when the strap crossed anything metal. They were ratcheted down with the ratchet mechanism on the side of the trailer, not a hand ratchet.
Go slow, be careful, leave lots of space, check your mirrors obsessively (several times a minute), and don't forget its back there!! Not kidding about that one, if you balance your trailer right sometimes it'll feel like it's not even there.
-Jer.