10 gallon to 30 gallon move help

I have a 10 gallon with live rock, skimmer and a clownfish.

I just resealed a 30 gallon and bought some live sand.

I want to move everything in one move.

Put in new live sand, put in live rock from 10 gallon and fill it up with new salt water. Then move the fish.

Am I missing something?