If you are planning on wild caught, plan on dealing with Brook and Amyloo year round. Just the nature of the beasts and with more efficient world wide shipping every day, expect the bugs to be freshly introduced at the wholesale/distribution level.
QT and Hospital procedures need to be ready for wild caught clowns, before any purchases. And if you are buying captive bred clowns from a dealer that mixes them all in the same system, then the same risk applies.
Best wishes.