Wobbly, a few puzzlements on all this cam work--
Since “piston demand” is purely a geometrically and engine speed derived quantity, why do you keep citing it as being at 28” ? What does 28 inches have to do with it? Also, the rpm at which this demand is calculated has not been given.
That being the case, on Moe’s graph, why does it show a demand after BDC?
If this demand curve came out of EnginePro or someplace else, they apparently have made or used assumptions on the entire inlet tract--which gets into gas dynamics and is an area that EnginePro’s expertise may be doubtful. In that case it is not so much “piston demand” but “ideal inlet tract demand discounting the existence of valves and other impedimentia as well as transient wave effects”.
You seem to put a lot of credence in EnginePro’s recommendations, but what is their basis for making those recommendations? Is it for a good street engine or a full-on racer, or what?
The point is, making tuning evaluations on the basis of unclear representations may not produce the desired or indicated result.