Almost had it right, shark...it will trap waste and increase nitrAtes.
I agree with the live sand...don't spend the extra money on "live", get the dry stuff.
Mc, the water host very little of the beneficial bacteria so that is not as important as keeping the bacteria alive on your rock. My suggestion would be to move the LR
in buckets with your water, have your critters in another bucket(s) with water, take a scoop or two of your CC with you to seed the new sand. You can keep the CC in a mesh bag when you put it in your tank just, leave it there for a few days so the beneficial bacteria can seed the sand and remove it. If you have enough cured LR
, you probably don't even need the CC.
Make sure you have some fresh PWC
ready for after the move.