New pre-k or top of the class?

That is the question that Brandy and I have been discussing the past couple weeks. Several teachers at HMCP have said that Gavin is very smart and might not be challenged enough in his current class, which begs the question...should I try to put him in a pre-k that's more than 2 days a week or even a private kindergarten? OR should we just let him be at the "top of his class" and worry that he'll get bored. Tough questions for a parent!!!