My brother moved his 12g from Florida to Chicago a couple times with no ill effects. Get a couple buckets, separate the LR
and corals into their own, bag all the fish and float them in a bucket and move them all. You can get battery operated air pumps for really cheap that will help on the drive. Buy some new sand for when you get there, its probably not worth spending the time cleaning it when you have a whole house to pack up. Look up a new LFS
before you leave in case of an emergency.