Depends on how much money you have to spend. It is always better to have a visual if you can afford it. Especially since you don't know for sure that the animal you have now actually has clown or not. Even if it does and you go against another het, there is no way to know the babies carry any clown unless they are visual babies. If no visuals hatch, you still cannot be sure the male has clown or not even if the female is a visual.