I would recommend that you get a couple of salt buckets from your LFS
. Fill them with tank water, then put the fish in one and the rock/sand in another. If you need two for the rock/sand, then so be it. Then I would put the rest of the water in jugs and move it. When you get to your house, I would put all the water from the jugs back in the tank. Then put the rock/sand and the water it was sitting in back in the tank. I would then acclimate the fish to the tank with plastic bags or something. You don't need to worry about acclimating them to the salinity or anything like that, just the temperature. If you want, you can change 10% of the water. I wouldn't do any more than a normal water change, though.
92-gallon corner tank, 100lbs of LR
, 140lbs of sand, 250watt 10,000K MH
, 110watts of actinic PCs, Mag 7 return, custom refugium, AquaC EV180 w/ Mag 5
Female lyretail anthias, eyelash blenny, tomato clown, saddleback clown, firefish goby, 2 sand-sifting stars