If ammonia spikes your clowns will not make it...I would net them and have the lfs
house them if you don't have a quarantine tank to put them in. Damsels might take care of them selves as well in the cycle as they don't always make it through a cycle but have been known to be tougher (10 years ago I cycled a tank with damsels and all five of them made it). The mollies might make it to but I would recommend taking the mollies out of the picture completely if you are concerned the tank is not cycled yet, this will create less of an ammonia spike with less of a fish load present. If you haven't already I would get familiar with the nitrogen cycle in a fish tank. Google or the start up article on this forum is good (see sticky on this forum for link)
"What kind of name is Poon?"
29 gallon hex, canister filter, too much live rock, two powerheads. Tank setup June 2012. Two clowns, fire shrimp, 2 chocolate chip starfish, 3 snails