He sounds gorgeous!!!

He might be big on the growth charts, but the whole point of those is a guide and it is okay for him to fall where ever he falls on there. They only time it is concerning with those growth charts is if he is cutting across percentiles in a really short space of time (either dropping percentiles or gaining percentiles). Even then it is just a guide and you have to judge it on your own individual situation.

Really he can be whatever size he is genetically created to be.

Enjoy your gorgeous boy