It does give him (and his classmates) more time to adjust.
If he gets along well and there's no reason not to skip, then I guess based on what you've said, I'd say do it. He sounds like a great candidate for a skip.
But I agree with Gratified that you do have to think through the pros and cons, and only you know your child well enough to say for sure. I'm totally talking out of my hat!
Have you looked at the Iowa Acceleration Scale Manual? I suspect he'll come off as a prime candidate, but if you're nervous, it's the gold standard for clarifying the issues you face. You might give it a look.
