I know or believe you know this already, you've been here a while ;)
In flat tappet cam as well as cylinder head world we know a few things...like the valve will sit at its full lift about a blip, about next to no time meanwhile the opening and closing rams have more area and the lifter/valve hang around and revisit those ramps aka spend more time there in comparison. So let take say the head does stall at .460....I myself will pick a cam lift about .060-.080 more to better utilize the flow in those lower lifts/hang the valve longer in the peak flow of the head. I know you're gonna say "well what about stall and the port backing up once you go beyond that peak lift?" well... Again remember the peak lift is only there for not even half the time the lifter/valve is on the ramps...so any backing up is gonna be micro...unless you lift the valve 'way into reversion' and in some cases the motor will still make some power...but nothing what it could be and lower under the cam operation will be crap, the intake gets blackened etc.
Let the ones who own a flow bench talk about what a head does, otherwise you're getting hot air and confusion from a guy who acts like he knows some secret when he really don't know **** and if he really did and was here to help, he wouldnt be telling you he can't help because it cost him too much to find out himself.