Part of the allure of Kelberi is how crazy they range. They don't really start to develop until 12", or around 2 years of age. In my experience, there are very few, if any, indicators of how an adult Kelberi will look when compared to a juvie. That notion aside, the same can be said within a specific locale. Not all Bass from exotic locales will be stunners. I've seen plenty of wild/F1/F2 Bahia that trump a lot of wild fish. When you see a nice, impressive Kelberi (addison and scat come to mind), realize that you are literally looking at a one-in-a-million fish.
All that said, the Kelberi market is saturated at the moment with wild, supposed wild, and a whole bunch of Asian Kelberi. Short of buying an adult, it's all a gamble. You need to take what you can get and do everything in your power to groom the fish.
I agree with this statement 100%