I did something similair a couple years ago except my drive was only a day, maybe 500 miles.
I tore down my tank the night before, brought premixed water in some jugs (you can use brand new plastic gas cans to hold the water, less chance of spilling vs buckets.) I had several plastic rubbermaid tubs, each less then half full with water, live rock in one, I bagged all my coral and fish seperately and put them in another rubbermaid tub.
It only took a day to drive but I didn't use a heater or powerhead, and when I set it up that evening I only filled my tank halfway since I didn't have enough premade water.
Everything made it, I had thought I lost a few shrimp but they survived.
I wouldn't worry to much about it as long as you aren't seeing too much in the area of temp. swings. I actually had a lot of my fish still in the tubs for a day or two after the move and they all lived.
What I learned from the move is, try to have enough NEW water ready, and if you can, set up a new tank at your destination before the move, or atleast prep for it. Also relax, don't let it stress you out too much, realize that most of your fish/coral had much more difficult trip from the ocean to you in the first place so they can probably handle the move.