Not picking on Charlie at all, but he made a comment in what I think is the latest video....... where he’s talking about the 24hrs of R&D, and how the next port got a quickie job and flowed almost as much.
The comment being....... sometimes you need to know when to stop.
I’m thinking that would have been at about hour #2 or 3 on the first port.
My feeling on the head flow situation is.......as it pertains to this particular build is....... if the heads flowed 210-215, that would be plenty........ and still way more than the intake will keep up with.