well the smart thing to do is to get only one pair. adding more later on might still case some problems...but the best thing to do is when you go and buy the clowns, ask someone there if it would be ok to add a pair later on...normally clowns are a little protective of their homes so they might still defend it if you get pairs later on. its better to ask when you are there instead of buying them and having them fight and get killed...
