Reheating crockpot meatballs?

Im cooking some frozen meatballs with sauce tonight in my crockpot to take to a pot luck lunch at my work tomorrow. My question is... Is it okay for me to cook them tonight,refrigerate them afterwards and then just take them to work in the crock pot tomorrow and reheat them so that they are warm for lunch time? If so, at what temperature should I put the crock pot on tomorrow a.m. around 7 so that they will be reheated by noon. Thanks!