It's a long time before I have to think about this since I haven't even started cycling my tank... but should I move my two guys to the big tank first, or is it better to add a bunch of cleaners (crabs/snails/shrimps) first, then add some corals, then my clowns (with appropriate time between to let the tank adjust to the bio-load). To be honest, they have a sentimental value to me so I really want to make sure they survive the transition... I think they'll be much happier with some room to swim.